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Coles]; " quotation confesses inferiority " [Emerson]; "Imitation is the sincerest form of flattery". A copy is a duplication of an original, whereas a replicate is one of a number of items produced by a procedure such as casting, printing; even an experiment all of which are equally original.
Thus it is an original and a copy at the same time! Assemblage, A4. Mostly refers to human affairs,. Leave that here? Part to restitution, R, M9. Cornwall]; minimum decet libere cui multum licet [Lat][Seneca]; " some are born great, some achieve greatness, and some have greatness thrust upon them " [Twelfth Night]. Nonincrease, Decrease. Thus the same word may occur twice, in these twp senses.
The main noun section should be interpreted as the result, not the action. Nouns expressing the action are marked as the cause. The verb also expresses the action. Note that spatial separation is a separate category interval, R under space. Alpha and Omega, " be all and end all "; complex, complexus [obs3]; lock stock and barrel. R58 to R61 [[order]]. These are two different concepts. Note that simplicity, entry refers to affections or appearance, not internal complexity. We also need a corresponding entry for conceptual or organizational simplicity. Complexity -- N.
R62 to R R, M2. Step, Term. R72 to R Group, Assemblage. Reference is therefore made to the former at This identity does not occur with regard to Inclusion, which therefore constitutes a separate category. So put it here. R5 intrinsicality!
The main heading should be here, where class and inclusion concepts are. We break out trait, characteristic into its own entry and move the main entries from R5 to R79a. R79 retains the concept of specification, pointing to a particular item. Personal Pronoun. I, self, I myself, myself, me; you, yourself; thee, thou, thyself; he, she, him, her, himself, herself, itself, theirselves. Possessive pronoun. R80 to R Procrustean law; law of the Medes and Persians; hard and fast rule, unwavering rule, unbending rule. What the devil! Holy cow! Can you top that?
For this purpose a pattern is defined as a group or set of characteristics, each of which has a value. R84 to R Should they be. Red book, Blue book, Domesday book; cadastre [Fr]; directory, gazetter[obs3]. Opposite of alone-ness! Where else? Triality[obs3], trinity; triunity[obs3]. R to R Change R to R [[change]]. The differences implied by these words are in general differences after some transforming operation, which could but does not necessarily require time in the physical universe. Continuance [in action]. Changeableness and Stability moved to P2.
Note: Present and future events, R Eventuality and R IN distinction with the abstract concept of change, these specific references to change over time are therefore placed in the physical universe, as properties of matter, generally? As mentioned above, change may not necessarily imply an associated time element, but in the case of stability time is closely related. See [matprop] at P2. Attribution Whewell History of the inductive Sciences , book xviii vol. Efficiency to Rb, Human ability moved to trait, P2. Blut und Eisen[Ger]; coelitus mihi vires[Lat]; du fort au diable[Fr]; en habiles gens[Lat]; ex vi termini; flecti non frangi[Lat]; "he that wrestles with us strengthens our nerves and sharpens our skill" [Burke]; "inflexible in faith invincible in arms" [Beattie].
Productiveness -- N. Physical Energy. Physical Inertness. R to R [[control]]. Absence of Influence. Roget refers to the R entry as "voluntary opposition ". The difference between contrariety R14, and antagonism is that contrariety is a property of the two things which are antagonistic, and therefore is listed here as a cause of antagonism.
When antagonism is a visible result, it can also be said to be a manifestation of contrariety. Dimensions of existence of matter. Rossetti]; "the time is out of joint" [ Hamlet ]; "Time rolls his ceaseless course" [Scott]; "Time the foe of man's dominion" [Peacock]; "time wasted is existence, used is life" [Young]; truditur dies die [Lat][Horace]; volat hora per orbem [Lat][Lucretius]. The Present Time. Noon -- N. Luke's summer, St. Martin's summer.
Punctuality -- N. Untimeliness -- N. R to R [[frequency]]. Regularity of recurrence. Peri odicity. Swithin's day, natal day; yearbook; yuletide. Irregularity of recurrence. Indefinite At R P1. We break out size generally as a separate category, and make largeness and smallness as subtypes. Largeness and smallness of size, here, are distingushable from largeness and smallness of quantity, in the abstract section R31 and 32 , but are nevertheless used commonly to refer to mental phenomena.
In this classification, we have to consider the use of dimensional adjectives in the mental world as a metaphorical usage. This is not entirely satisfactory, but probably valid. But in speaking of spatial intervals, we may mean the separation itself, and sometimes the actual segment of linear space between separated points. Here we emphasize the separation aspect. This concept is the same as distance, but the "distance" of R refers to large distances. We have also separatee lengthiness from the general concept of length, in order to properly place the adjectives.
These properties may refer to space or time, both of which are physical measures. Note that the thinness of a layer is not quite the same as the thinness of a rope, but has similar expression. The thinness of a plane is not usually referred to as narrowness, but a wall may be narrow. So we keep both together, as in Roget. As with length, break away the abstract property from the property of being high.
Horizontality is a property of a line, flatness is a property of a plane. Perpendicularity -- N. Investment Surroundings, Circumjacence We separate the two by making be surface only, and adding a. A number of words e. Investment, Clothing. Clothing Moved to physical objects, artifacts P2.
The "interior" of a container, where the contents are located, we will designate as Ra.
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Position, here, is the location of a particular object in space. Note that situation, environment show up here. Note that location, R, is the act of locating something. Inhabitant moved to Person, P2. Be it ever so humble there's no place like home[John H. Payne]; home is where the heart is; eigner Hert ist goldes Werth[Ger]; "even cities have their graves" [Longfellow]; ubi libertas ibi patria[Lat]; home sweet home.
Most of below is related to cosmos. See also P2. Component materials, must be listed separately: here a general concept of component material, and under P2. Raw Materials. Useful types. Materials classified by function, which might be in either category, will be rpimarily under artifacts, but should be crossed-referenced to natural substances where appropriate.
This is not necessarily true of liquids, gases, or radiation. Just a device to simplify the inheritance of this property. Do we need a behavioral property? No matter is totally and permanently stable. This was an abstract concept in Roget. Lubrication to Physics P2. So strength is in a. We divide the Roget Semiliquidity into viscous liquids and gels, a. This includes foods like soup and sauces. Semiliquids which do not flow readily are under the next section, gelatinousness.
Douginess is in the next section. The personality qualities are listed separately as a mental phenomenon under Affections, R, at M3. The concept of Habit, R, at M7. WE leave it that way. Here "primogeniture appears twice, as the tradition, and as a property of the firstborn. Two different senses. The objects normally considered as "physical objects" here are defined as "palpable objects".
The definiton of something as a "physical object" will default to "palpable object", which is the usual sense. Jun Jul Aug Sep Oct Nov Dec Jan Jul 6. Hello Richard, I see your point and indeed to ensure the needed precision in general one would need to use bfloat and fpprec.
From a simple test your suggestion seems to automatically work with "bfloat " as "f90 " gets rid of the "b0" etc. Is there a way to turn off such messages? It is not 1. If so this approach will need some more work. That is, if Maxima has computed a numeric float constant and displays it as 1.
Hello Richard, As a result of adding "ratdisrep " your suggestion works. The issue appears to be that "ratnumer " and "ratdenom " return canonical rational expressions which "concat " cannot deal with. Hello Robert, The "E" is not at all a problem, but rather is the correct starting point for reals needing an exponent. For instance 1. Not at all. However, my Maxima expressions are replete with rational numbers. I agree. Frank, I have taken the liberty of forwarding your reply to the list. Best, Leo.
That works like a charm. Is there perhaps a more elegant way to do this? In fact f You could try something like this.. Hello Richard, OK, got it. Yes, I see that now. Unfortunately the case of rational numbers cannot be excluded as they are omnipresent in the Maxima expressions. Using bfloatp and bfloat instead in the function suggested by yourself unfortunately also does not work. If the problem is that f90 prints out only E exponent markers, while it should print out D, that is a bug in f Incidentally there is also a separate function fortran Fixing f90 in this respect just requires copying a couple of lines of code from fortran to f In the meantime maybe you can try the fortran function and see if it serves your needs.
Hope this helps, Robert Dodier. The entries in the matrix are not floats.
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I assumed that for f90 you wanted to leave integers alone, and didn't have rational numbers. You can also use Maxima bigfloats. Maybe you don't even need f90, if you spend much time doing extra-precision float arithmetic. Hello Richard, Thanks for the program. It does not seem, however, to work for matrices as nothing gets concatenated in this case. Here is a program to scan through the expressions and replace float constants. However f90 renders this as "1. Maybe the option to f90 should be how to render literal strings, with or without quotes. This would be more general.
This is a very useful function and one of the reasons why I choose Maxima for many problems. It does however have one flaw. This concerns its treatment of constants. According to the Fortran standard these are single precision constants. While many compilers have command line options to promote constants from single to double and sometimes to quad precision, this is done globally, and therefore may not at all be desirable. This issue could easily be resolved by the addition of an argument to "f90 " which causes a character string to be added to all constants. This approach would allow arbitrary precision depending on the value for "rp" in the Fortran program.
Sorry that I wasn't able to answer earlier this time: Normally we try to make error messages as concise as possible - which is a good thing. This time, though, the manual contains no real help on resolving the problem since we don't document what we derive the location for maxout. But I don't know if that would be exaggerated. Another TODO would be to document the environment variables maxima reads out at startup - and I think the. Don't know if the output of maxima --help or the manual would be the appropriate place to do so. For the "when": Give me again a little time to optimize that.
Kind regards, Gunter. That seems to have the desired effect. I've pushed that as commit cb3. So I'm going to let it stand. I didn't know what nalgfa. I wasn't able to locate nalgfa. I'm mystified. OK, thanks for the info. To fix bug I've copied the logic for binding algebraic from echelon to triangularize. I find that cutting out line enables triangularize to return the expected result for a matrix containing foo, and does not cause any unexpected test failures. I'm investigating whether cutting out that line has any unintended effects.
As an experiment I enabled algebraic by default. As you might expect, many some dozens of tests come out differently. I looked at a few and it appears the results are equivalent but in a different form. At this time I'm not interested in changing the default value so I didn't look at it any more carefully than that. Cheers, Kris Katterjohn. Now i should investigate a bit more every command you gave me. Thanks a lot! Para: Pablo Fonovich Cc: maxima-discuss Asunto: Re: [Maxima-discuss] Second order differential equation with boundary conditions Hello, Indeed, bc2 seems to have an issue with the fact that the second boundary condition is expressed as a function of y, or at least I wasn't able to use bc2 to solve the equation.
You want? Hello, Indeed, bc2 seems to have an issue with the fact that the second boundary condition is expressed as a function of y, or at least I wasn't able to use bc2 to solve the equation. Yes, I think you include the whole session in the unwind-protect. That is, say there is a program called something like "run" to start maxima within lisp.. Indeed i think that atexit is the correct solution, but since it is not a lisp primitive, you need to use alien calls to implement it also called foreign functions. Since there is no uniformity in foreign function interfaces between various lisps, this may work only after having chosen a lisp variant, e.
One of the main strengths of python is that a large part of the unix system calls are wrapped in the language in a well documented way and are very easy to use. It is a pity that no such similar thing exists for at least the most popular lisp variant, namely sbcl. If a file is opened by two programs, and then one of these programs delete it, it is only deleted when the second program closes it, at least this is the way it works in Unix. Hello all, I have q question concerning extracting the matrix from a quadratic form. Perhaps some function exists that does this automatically?
This is an interesting resource. But using undocumented stuff that isn't portable to other lisps for implementing a nice-to-have in a portable program that is meant for production use Unwind-protect is a cool concept I didn't know about. I think one way to make sure that the file is kept long enough that we are sure gnuplot can finish its work first would be to wrap the whole maxima session within one big unwind-protect.
Actually having an atexit function for maths would be quite an absurd kind of concept feeling like "too much Mozart" In the meantime I have stumbled upon a additional problem: What if a maxima batch file plots something big to a file and then ends in a quit : Linux will keep the file alive after it has officially already been deleted in case that it has already been opened by gnuplot. We will encounter bug reports about that.
Watching the life time of the gnuplot process instead? Currently I tend to think that Robert is right that the problem isn't big enough to justify the remedies I could think of. But unwind-protect really is nice. Thanks again! I wonder whether algebraic should be true by default.
It does, however, give more complicated results in some cases. I am also not quite sure what it is supposed to do. Didn't look, but if gfn is the full path, then I don't think it's really necessary to say anything else. It's pretty clear that the file can't be created and the user needs to figure out from the path why. As to I'm ok with no attempt at diagnosis or repair, but I strongly want error messages to give me as much information as possible about why the error happened.
So, no messages like Failed to compute foo. But messages like Failed to compute foo because bar is not baz. And information theory! Including such things as the Fano algorithm for decoding convolutional codes that I studied way back when, and Shannon-Fano coding. Requiescat in Pace Dr. Fano classic engineer and scientist - thank you for laying many stepping stones of computing for the generations to come!
But then, why does algebraic:true help? I find algebraic:true enables Maxima to get the correct result for that problem. Incidentally I see that echelon enables algebraic:true and gets the correct result for the matrix in Does anyone see why I shouldn't copy the logic for algebraic from echelon to triangularize? Thanks for any insights. Robert Dodier. As to whether that state of affairs is desirable, I won't speculate here. Thanks a lot. I need to read this again myself.
Even if it already is a mighty tool willing to face most things an engineer would encounter. During the 's at MIT he was involved in many important projects. He also served the important role of being the adult in the room. Dear all, Meijer G- functions are used in fractional calculus. The typical use is to solve an equation in the Laplace domain and then represent the time-domain solution in terms of Meijer G- functions. In particular the system call mkstemp is provided see at lines Deleting these temporaries when exiting maxima is perhaps not obvious, since wrapping the call in unwind-protect could serve to delete the file immediately after use, but i don't see how it could keep the file for the whole maxima session and then delete it.
Apparently, see lines , on exit sbcl normally runs the atexit hooks, so it should be easy to write a small piece of lisp to erase the temporaries when exiting. Of course using these tools would work only with sbcl and perhaps cmucl, and moreover it is a pity that there is an almost complete lack of documentation for them, except in the source code Also what is the status of these tools under Windows, i don't know.
My rationale was that some linux distributions keep all entries in the tmp directory in RAM until the next reboot and windows cleans up the tmp directory only if it runs out of disk space - but many virus scanners invest time into these files on a regular basis. It should be able to so now on windows and posix-compatible computers which in turn include linux, bsd and mac os and has a few fall-backs installed that might work on other systems.
It also works on Samsung and HTC smartphones. On Wiko phones detection of the tmp directory currently fails: They for some reason are shipped without a suitable folder. I don't have much experience with plot. But I will see if I can make draw output an error telling why the plot will be all white. Well, that makes a lot of sense. Maybe someone will be inspired to work on it. I guess that could be helpful for the third step in the process outlined in the link to sympy.
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It's an Octave question. Maybe because Maxima is ot Octave? Here's a fairly practical collection of what to do, from the people who are doing sympy symbolic python. I dunno -- if temp files are written into a temp directory perhaps even a per-session subdirectory of the temp directory , then they don't need to be cleaned up, right? I'm assuming that Maxima can identify a suitable temp directory -- I know that has been the subject of discussion recently.
I suspect this gives you what you need to clean up files etc. Maybe you want to clean up those temp files when plot is done, or a plot window is closed for people who show plots in separate windows. Dear all, As far as I know common lisp isn't convinced that there is a operating system to fall back to and therefore doesn't provide a standard way of registering an atexit function. But does maxima provide such a thing?
The background to this question is that a list of commands that are called when the quit function is executed or a similar mechanism would be handy for cleaning up the temp files from the draw package when maxima is closed. Thanks a lot, and Kind regards, Gunter. I might. The advantage of doing it this way is that all users of complex-float-numerical-eval-p and friends can win.
Does that seem correct? I know we've been over this but I don't remember what's the expected result. I'll be happy to try a different program if you or anybody wants to post one. But if you want to go ahead, I don't have any objection. I've pushed some commits for ellipt. I think this should fix the problem mentioned at the start of this thread. I'll try it again to see what happens. I'm working on it. One thing I thought of was making complex-float-numerical-eval-p return a list of the converted values instead of T.
This should be a compatible change.
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I also think it's not great style to do cond setf foo func , but I'm ok with that. Yeah, I think so too. I'm fine with either name. Well, I guess I don't have a strong opinion either. But I'll observe that most of the bffoo functions also exist as just foo, and bffoo indicates the bigfloat version of foo. The function is mostly about foo, and less about bf. I don't think that applies to the bigfloat info function.
It's OK to me either way. Personally, I prefer bfloat, too. But most other functions on bfloats use just bf. Such a function is OK by me, although naming it bfloatinfo makes the purpose of it a little clearer. I don't know what that means or who called it.
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Anyway that's where "asksign: internal error" occurs. I hope these bugs have been reported to the bug tracker. Otherwise it's likely they will be lost in the mists of time. I think the approach is ok, but it's a bit debatable. However, since complex-float-numerical-eval-p says it's a complex float, we have some choices: 1. Do what we have to to evaluate it since complex-float-numerical-eval-p returns T 2.
Fix complex-float-numerical-eval-p so that it doesn't return T in this case. I think 1 is probably the best choice right now. I've fixed this now. If anyone depended on this order, this change will break that. However, the fix for bug would have also changed the order of things, so perhaps this is ok. Well, we could have gone out of our way in the code to preserve the order, but that seems not optimum.
On Not that that doesn't solve the original problem, though. To me it looks like your task involves solving a non-well-conditioned polynom. This means that even small errors like the small rounding errors of bit floating-point numbers will inevitably add up to big variations of the result. I am no expert in these things, though, so forgive me if I am completely wrong.