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seen Jul 4 at 9:26

Jun
24
asked Selecting a proper p-value (Chi-squared)
Jun
23
comment What should I learn first, Mathematica or MatLab?
Mathematica is both numeric and symbolic. Symbolics with Mathematica are much more powerful. Numerics almost the same. And Mathemtica is better with big numbers and abstract algebra. The only advantage of Matlab is that it has some predefined engineering applications not found in Mathematica.
Jun
23
comment What should I learn first, Mathematica or MatLab?
You can also create standalone compiled scripts with Mathematica, wolfram.com/mathematica/new-in-8/integrated-c-workflow/…
Apr
22
awarded  Editor
Apr
22
revised Differences between GAP and PARI/GP?
added 337 characters in body
Dec
21
awarded  Student
Dec
18
comment hyperpower modular
I think I've found a way to solve some of these problems. I didn't find it myself but I found it on the Internet. Using $a^i \equiv a^j \pmod {m} \Leftrightarrow{} i \equiv j \pmod{e}$. Where e is the multiplicative order, $e=ord_m (a)$, that's the smallest k that makes $a^k \equiv 1 \pmod{m}$, And it can be used only if $gcd(a,m)=1$
Dec
17
asked Differences between GAP and PARI/GP?
Dec
17
comment hyperpower modular
Or something maybe easier, $a \uparrow \uparrow b \mod c $ such as $7^{7^{7^{7^{7^{7^{7}}}}}} \mod 17$
Dec
17
comment hyperpower modular
For example how much is ...? $8^{7^{6^{5^{4^{3^{2}}}}}} \mod 17$
Dec
17
awarded  Supporter
Dec
17
comment hyperpower modular
Oh, thanks, I didn't notice that I wrote (mod p). How would you solve it if it were (mod N), with N being any integer positive number?
Dec
16
asked hyperpower modular