CyberPlayerOne
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4 answers
18 votes
3k views
2 bookmarks
Is there a way to denote the calculation $1+2+3+\dots+n$?
4 answers
4 votes
6k views
2 bookmarks
If matrix $AB=A$, does it mean B must be an identity matrix?
1 answers
3 votes
2k views
1 bookmarks
How is the multiplication between a multidimensional tensor with a matrix defined?
0 answers
3 votes
454 views
What do these symbols mean? One looks like an inverse "T", another looks like ^
2 answers
2 votes
63 views
if matrix multiplication $B*A=C*A$, does it mean $B=C$?
1 answers
1 votes
1k views
What is the relation between Kruskal tensor and CP decomposition?
0 answers
1 votes
63 views
What is pseudodiagonality in matrix/tensor?
1 answers
1 votes
50 views
What do symbols "\" and "/" mean in the context of matrix computation?
0 answers
1 votes
53 views
A matrix being "diagonal with a $c$-column border", what does it mean?
1 answers
1 votes
241 views
1 bookmarks
Do these two rearranged matrices have the same singular values (or the same rank)?
1 answers
1 votes
74 views
least square approximation: how this matrix calculation equation is deducted?
2 answers
1 votes
162 views
About matrix $R$, what is this called: $R^TR$? What is it for?
1 answers
1 votes
87 views
Are there any mathematical/physical concepts or theories for dealing with a matrix in which the values are changing in a certain way?
2 answers
0 votes
239 views
What is $k$ for in the Expectation of Binomial Distribution
2 answers
0 votes
59 views
What will $A^+A$ and $A^gA$ actually or exactly get if $A$ is not invertible?
0 answers
0 votes
442 views
How to calculate matrix (and vector) multiplication with outer product and inner product?
2 answers
0 votes
461 views
What does it mean by one matrix is **unitarily similar** to another?
1 answers
0 votes
197 views
How to prove $V*V^T=I$ in SVD?
0 answers
0 votes
338 views
Prove this relation between truncated SVD and eigen decomposition?
2 answers
0 votes
109 views
1 bookmarks
Does Bayes' theorem have constraints for it to work?
1 answers
0 votes
428 views
How can I calculate the probability of multiple events assuming they may or may not be independent?