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8
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0answers
78 views

A bug in the overloading of MemberQ and FreeQ for Association?

While answering Pattern match for nested Association I came across behavior of MemberQ and FreeQ in 10.0.1 that I believe is ...
5
votes
0answers
197 views

Is everything in Mathematica ultimately stored as a rule?

My current understanding about Mathematica is that everything, at the lowest level, ends up as replacement rules. First question: is this true? Second question: does Mathematica "gloss over" these ...
2
votes
0answers
52 views

Unexpected behavior from Indexed

I was going to include Indexed in this answer, thinking that it operated much as a List-only ...
2
votes
0answers
174 views

Lazy evaluation/loading of parts of an expression

Is it possible to have an expression x such that its elements are only evaluated when they are individually accessed, for example when evaluating statements like ...
1
vote
0answers
57 views

Function behavior based on Head

I'm figuring how to implement a function behavior based on the Head of its argument. I mean ...
1
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0answers
50 views

Type Vietnamese in Mathematica

I type Vietnamese using UTF-8 Encoding but Text Display got error. How to type Vietnamese, Chinese in Mathematica. Please help me.
0
votes
0answers
67 views

Solution of a set of quadratic congruences (Chinese remainder)

Edit: Please remove this question. I think there are mathematics error in what I am asking. You are welcome to edit the question if you can state the problem correctly. I have a set of quadratic ...
0
votes
0answers
56 views

?function-name does not return function help

For some reason when I use ?function-name to ask for help on a function, I got a very clinical breakdown of that function with its options and attributes instead of the blurb about the function: To ...
0
votes
0answers
98 views

Nested For loop with NDsolve

I am solving two simple differential equation using NDsolve. ...
0
votes
0answers
94 views

Issue with Set function

Tables often come with column headers. Indexing the columns with the header is a natural thing to do. Although a proper dictionary is the usual solution in such a case, I find it often practical and ...
0
votes
0answers
88 views

Mathematica function Det has unexpected behavior

I am using Mathematica "Kernel" -> {"Version" -> "9.0 for Microsoft Windows (64-bit) (January 25, 2013)", "ReleaseID" -> "9.0.1.0 (4055652, 4055188)" on a Win 7 machine. The file listed below uses ...