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age 29
visits member for 2 years, 4 months
seen 20 mins ago

As time goes on, I grow more disillusioned with quantum field theory.


13m
comment why head Association cannot be replaced by head List
This is really interesting... is it possible to invent your own atomic object, and make your own functions that extract/manipulate their data?
11h
comment Sum over multiple indices
@Eleven-Eleven I think you should as a new question, and include your code for f, and one of our (belisarius or my) codes for generating that sum.
11h
revised Sum over multiple indices
removed pointless comment from code
11h
comment Sum over multiple indices
@Eleven-Eleven I don't think either of us (belisarius or I) understand what you mean. Please ask a new question (and include what modifications/additions you made to our codes)
11h
comment Sum over multiple indices
@Eleven-Eleven I don't understand what you mean by "I have replaced with what I needed and It seems that my sum is always 0". Exactly what did you replace??
22h
comment Sum over multiple indices
This goes faster than my answer... any ideas why?
22h
comment Sum over multiple indices
@Eleven-Eleven I fixed a typo in my answer: 1/n! to 1/k!.
22h
revised Sum over multiple indices
Fixed an important typo : n! --> k!
22h
comment Sum over multiple indices
@belisarius is there not a $1/k!$ missing?
22h
comment Sum over multiple indices
@Eleven-Eleven I finished my answer. Please check if the result is correct.
22h
revised Sum over multiple indices
continuing since previous answer was unaccepted.
23h
answered Sum over multiple indices
Dec
19
comment How to define a two-variable sequence?
Why not Sum[2^(n+m-2j),{j,0,m-1}] ?
Dec
18
comment Why is C-compiled (but not WVM-compiled) code so slow in Manipulate?
This solution appears to work in 9.0.1 MacOSX and in 10.0.1 on Linux.
Dec
18
comment Why is C-compiled (but not WVM-compiled) code so slow in Manipulate?
@Szabolcs Setting the option Evaluated->False does make it more responsive. I'm trying to find more info on this option, but the documentation doesn't seem to exist. Do you know where I can find more information?
Dec
17
accepted Disable templates for user defined functions with usages
Dec
17
asked Why is C-compiled (but not WVM-compiled) code so slow in Manipulate?
Dec
15
comment Better replacement rules to perform this change of variables?
@thecommexokid I have modified the rules so that f[τ] correctly gets replaced to f[t], and changed the condition so that it looks only for {f, g, h}.
Dec
15
revised Better replacement rules to perform this change of variables?
Added a rule to convert f[τ] to f[t], and modified condition to look for specific functions f, g or h.
Dec
15
answered Better replacement rules to perform this change of variables?