# Tagged Questions

99 views

### Matrix/tensor addition behaving funny under replacement?

I have two matrices I want to add, and one of the matrices is a tensor product of two vectors. I've used a SetDelayed to define the summed matrix, because I want to evaluate it for different values of ...
128 views

### Matrix exponential via Cayley-Hamilton Theorem

I'm attempting to calculate the exponential of a matrix via Cayley-Hamilton theorem. (Following the "concrete example" from http://en.wikipedia.org/wiki/Cayley%E2%80%93Hamilton_theorem) I am having ...
107 views

### Matrix substitution

I'm newbie in Mathematica and would like to ask one simple question. Let's say I have matrix with some elements == -1 ...
108 views

### Replace matrix with conditions

I want to replace the values of 1. in slot under the condition that the year and month in basevalue and ...
146 views

### Conditional Check on Matrix

Suppose I have the following matrix (i,j): ...
75 views

### Back Linear Substitution

I have an equation set Ax=b and A(n*m),n<m . To lower down the dimension, I express some vars by other vars, which gives ...
210 views

### Problem with determinant calculation [closed]

I have a 12x12 matrix (2D list), called M, which depends on some variables. Usually I set all of the expect of one (call it x). ...
I have a matrix $M$, whose dimension I am unsure of, which has only $\lbrace0,1\rbrace$ entries. I would like to generate all the possible matrices that result from changing (some subset) of the $1$'s ...