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comment How to join two strings one of which is Subscript?
StringQ asked whether str was a string. Mathematica correctly answered, "False". Try str//FullForm or str//FreeForm to confirm the structure of str. Then try ToString[str] and see what you get.
Oct
13
revised Best way to find permutation with specific total
corrected the count
Oct
13
comment Best way to find permutation with specific total
Thanks, Chris. I'm not sure how I got the wrong answer. Must have been running some earlier code that bound different values to combos.
Oct
13
revised Best way to find permutation with specific total
corrected the count
Oct
13
revised Best way to find permutation with specific total
deleted 1 character in body
Oct
13
revised Best way to find permutation with specific total
deleted 195 characters in body
Oct
13
revised Best way to find permutation with specific total
deleted 195 characters in body
Oct
13
revised Best way to find permutation with specific total
added 253 characters in body
Oct
13
answered Best way to find permutation with specific total
Oct
13
comment Best way to find permutation with specific total
+1 But your approach is very straightforward.
Oct
13
comment Best way to find permutation with specific total
I believe you still have to find all the permutations of each of the partitions. (Permutations/@)
Oct
11
comment How to figure out the seed I used to generate several random numbers given that I didn't used SeedRandom at first place?
SeedRandom[n] does not use the time. SeedRandom[] uses system clock plus some unspecified system attributes. From what I understand, you did not use SeedRandom, so we cannot know what state the pseudo-random generator was in.
Oct
11
revised How to figure out the seed I used to generate several random numbers given that I didn't used SeedRandom at first place?
examples
Oct
11
answered How to figure out the seed I used to generate several random numbers given that I didn't used SeedRandom at first place?
Oct
2
comment Multiple animation in Mathematica
+1 For the interesting use of RotationMatrix.
Oct
2
comment finding eigenvectors of a n*n symbolic matrix
You may be right. I didn't realize that this was a subtle problem. Thought it was a simple, direct issue.
Oct
2
reviewed Close How to use “Compile” function when argument is array of size 500?
Oct
2
comment Outputting numbers symbolically
To output Table[2^n, {n, 1, 5}] simply type "Table[2^n, {n, 1, 5}]" and hit <shift>+<return>
Oct
2
reviewed Close finding eigenvectors of a n*n symbolic matrix
Sep
30
awarded  Explainer