[math-fun] What are your favorite math apps for smart phones?
I recently acquired an Android smart phone, and have been surpised at all the things it can do and the apps it can run. I installed "Primality Test" by the Mincemeat team. This is the only prime testing app I could find that works with numbers of arbitrary precision. I didn't find any factoring apps that go beyond 10^18, and those appear to do factoring only by trial division. Are there better ones out there? (I'm already working on one for my own amusement, but I'd like to find a good one). Just for fun, I installed a spectrum analyzer (Spectral Audio Analyzer by RadonSoft): it displays the frequencies in sounds that are picked up by the microphone. What are your favorite math apps? In particular, are there any calculators where you can type expressions (like "sqrt(-5) + sin(pi/7)^2") instead of just punching keys on a keypad? Bob Baillie
I installed the Sage Math app, which is in beta for Android: https://play.google.com/store/apps/details?id=org.sagemath.droid&hl=en It's flaky but I don't know of anything better. Charles Greathouse Analyst/Programmer Case Western Reserve University On Mon, Jul 8, 2013 at 2:19 PM, Robert Baillie <rjbaillie@frii.com> wrote:
I recently acquired an Android smart phone, and have been surpised at all the things it can do and the apps it can run.
I installed "Primality Test" by the Mincemeat team. This is the only prime testing app I could find that works with numbers of arbitrary precision. I didn't find any factoring apps that go beyond 10^18, and those appear to do factoring only by trial division. Are there better ones out there? (I'm already working on one for my own amusement, but I'd like to find a good one).
Just for fun, I installed a spectrum analyzer (Spectral Audio Analyzer by RadonSoft): it displays the frequencies in sounds that are picked up by the microphone.
What are your favorite math apps?
In particular, are there any calculators where you can type expressions (like "sqrt(-5) + sin(pi/7)^2") instead of just punching keys on a keypad?
Bob Baillie
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You can run Maxima, a computer algebra system, on your Android mobile devices Mar. 31, 2013 Maxima on Android 1.7 on Google Play. https://sites.google.com/site/maximaonandroid/ Maxima, a full featured computer algebra system, now runs on your Android mobile devices. Maxima, and its predecessor Macsyma is one of the most long-established software in the world, back in 1960s at MIT LCS and Project Mac. You can perform many many math operations such as integration, differentiation, matrix operations, rational numbers, symbolic treatment of constants such as pi, e, euler's gamma, symbolic and numerical treatment of special functions such as sin(x), cos(x), log(x), exp(x), zeta(s), and many more. Maxima on Android is a port of Maxima on the Android operating system. Thanks to Sylvain Ageneau' effort on porting Embeddable Common Lisp to the Android OS, the latest Maxima code runs nicely on ECL on Android with very small changes to the source code. https://play.google.com/store/apps/details?id=jp.yhonda&hl=en At 11:19 AM 7/8/2013, Robert Baillie wrote:
I recently acquired an Android smart phone, and have been surpised at all the things it can do and the apps it can run.
I installed "Primality Test" by the Mincemeat team. This is the only prime testing app I could find that works with numbers of arbitrary precision. I didn't find any factoring apps that go beyond 10^18, and those appear to do factoring only by trial division. Are there better ones out there? (I'm already working on one for my own amusement, but I'd like to find a good one).
Just for fun, I installed a spectrum analyzer (Spectral Audio Analyzer by RadonSoft): it displays the frequencies in sounds that are picked up by the microphone.
What are your favorite math apps?
In particular, are there any calculators where you can type expressions (like "sqrt(-5) + sin(pi/7)^2") instead of just punching keys on a keypad?
Bob Baillie
On 08/07/2013 19:19, Robert Baillie wrote:
What are your favorite math apps?
The ones I have on my Android tablets are: MaximaOnAndroid (symbolic algebra) PariDroid (number theory) Frink (calculations with units etc.) Addi (rough MATLAB clone) plus a couple of simple calculator apps (though actually I generally find the more general things more convenient). This list is not the result of extensive research and I won't be at all surprised to find that there are other much better things out there. -- g
I like Piololgie, written by Sebastien Wedniewski. It looks like its only available on IOS (iPhone and iPad). The Piologie library is a very high performance library for doing multiprecision calculation. It does have, what appears to be, a very good factoring algorithm, though the documentation doesn't say what it is, but I'd bet something like the quadratic sieve. It calculates many standard constants (pi, Euler's constant gamma, etc.) to a *lot* of decimals, very quickly. Victor Here's the description from the app page. Piologie is a mathematical library to calculate with numbers of arbitrary precision. More details are available in the documentation (in German only). This iPhone App uses this library to provide the functions to factor large numbers and to calculate several thousand digits of mathematical constants. On Mon, Jul 8, 2013 at 2:19 PM, Robert Baillie <rjbaillie@frii.com> wrote:
I recently acquired an Android smart phone, and have been surpised at all the things it can do and the apps it can run.
I installed "Primality Test" by the Mincemeat team. This is the only prime testing app I could find that works with numbers of arbitrary precision. I didn't find any factoring apps that go beyond 10^18, and those appear to do factoring only by trial division. Are there better ones out there? (I'm already working on one for my own amusement, but I'd like to find a good one).
Just for fun, I installed a spectrum analyzer (Spectral Audio Analyzer by RadonSoft): it displays the frequencies in sounds that are picked up by the microphone.
What are your favorite math apps?
In particular, are there any calculators where you can type expressions (like "sqrt(-5) + sin(pi/7)^2") instead of just punching keys on a keypad?
Bob Baillie
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Hello, yes there are a lot of nice applications for math but there is a big problem : us , I mean us the humans using such a clumsy device on which you can hardly cut and paste anything or type anything, I can type on a classic keyboard about 2 times faster than hand writing, on these keyboard I can type, well 1 character per second. I made a test on one of them to compute pi, well it is about 100 times slower than 1 good computer, so what is the point ? For me it is like going back in time to the 70's when I used to do maths on a pdp-11 or on my hp-67. For me : this is not nice, I paid about 500 euros for the latest HTC device last year, someone stole it, I bought another one with the insurance I am beginning having problems with it, well I think I will go back to a portable and stupid phone and keep the math on my computer. Can someone tell us what application on these gadgets is doing a better job for mathematics than one classic computer with a 24 inch display ?? I am not convinced, sorry. Maybe on a desert island, but well, you would not last very long on batteries. ... Sincerealy, Best regards, Simon plouffe
Simon, there's no question that they're much worse than computers for computation! But sometimes it is convenient to have a tablet or a phone with you and do a quick calculation. Charles Greathouse Analyst/Programmer Case Western Reserve University On Mon, Jul 8, 2013 at 8:54 PM, Simon Plouffe <simon.plouffe@gmail.com>wrote:
Hello,
yes there are a lot of nice applications for math but there is a big problem : us , I mean us the humans using such a clumsy device on which you can hardly cut and paste anything or type anything, I can type on a classic keyboard about 2 times faster than hand writing, on these keyboard I can type, well 1 character per second.
I made a test on one of them to compute pi, well it is about 100 times slower than 1 good computer, so what is the point ? For me it is like going back in time to the 70's when I used to do maths on a pdp-11 or on my hp-67.
For me : this is not nice, I paid about 500 euros for the latest HTC device last year, someone stole it, I bought another one with the insurance I am beginning having problems with it, well I think I will go back to a portable and stupid phone and keep the math on my computer.
Can someone tell us what application on these gadgets is doing a better job for mathematics than one classic computer with a 24 inch display ?? I am not convinced, sorry. Maybe on a desert island, but well, you would not last very long on batteries. ...
Sincerealy, Best regards,
Simon plouffe
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Yes, this is a nice gadget, as a quick math and computation device which is portable, I use it a lot for day to day things. a good thing would be : the gadget as an interface to a bigger computer, you say out loud what you are looking for and then the super computer algebra figures out what to put in place and tells you when something is found. with google as a general purpose search engine in the back we are almost there , I can for example ask for a display of the gamma or zeta function out loud and it shows the graphics , a bit like wolfram alpha but we are still not like in star trek when they can ask the computer : compute pi to the last digit or when a certain 'data' ask for anything for a pattern in a signal out loud at the computer. One good thing would be for example, you say 1 2 3 5 8 13 21 34 and ask what is this ? and the interface gets you to the OEIS. ... have a nice evening. Simon Plouffe
Google already does this. And Wolfram Alpha has a brave stab at doing more ... WFL On 7/9/13, Simon Plouffe <simon.plouffe@gmail.com> wrote:
... One good thing would be for example, you say 1 2 3 5 8 13 21 34 and ask what is this ? and the interface gets you to the OEIS. ...
have a nice evening. Simon Plouffe
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participants (7)
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Charles Greathouse -
Fred lunnon -
Gareth McCaughan -
Henry Baker -
Robert Baillie -
Simon Plouffe -
Victor Miller