How to find if a key exist in a matrix
30762
array_key_exists is not working
147903
Similar matrices-Identity
134254
Hash key as array to obtain the minimum and maximum numbers if a columns values are equal
10631
Get the row and column name of the minimum element of a matrix
62555
How to find if an element of a list is in another list?
156512
Verify a matrix value on MATLAB
55159
Find all matrices that commute with given matrix
13948
Matrix in a matrix
6211
Algorithm: how to find a column in matrix filled with all 1, time complexity O(n)?
99162
Ruby Style: How to check whether a nested hash element exists
112077
How to check if a value already exists to avoid duplicates?
86841
Find a matrix $B$ such that $B^3 = A$
44898
Help with commutative property of matrices problem
18629
Check if a given key already exists in a dictionary and increment it
13200
How do I know the span of a matrix
11475
How to create automatically some matrices for symbolic manipulation?
22776
Squares in Matrix