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craaaft
  • Member for 8 years, 10 months
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4 votes
1 answer
4k views

Partitions of a power set and equivalence classes

4 votes
2 answers
1k views

Notation of an infinite union

3 votes
1 answer
68 views

Show that there are no integers that solve equation

3 votes
2 answers
486 views

Shifting indexes in a double sum

2 votes
1 answer
358 views

Trying to imagine how functions of bounded variation look like

2 votes
2 answers
320 views

Evaluation under tensor products

2 votes
1 answer
2k views

Proof of $f^{-1}(B_{1}\setminus B_{2}) = f^{-1}(B_{1})\setminus f^{-1}(B_{2})$

2 votes
0 answers
111 views

Solve birthday problem with probability theory and combinatorics

2 votes
1 answer
350 views

Measurability of indicator function

2 votes
1 answer
74 views

Questions regarding essentially normal operators in BDF theory

2 votes
1 answer
50 views

Restriction of function and projection from right side equivalent?

2 votes
1 answer
70 views

Question about Proof of BDF Theorem in Analytic K-Homology book

1 vote
0 answers
61 views

Relationship between *-homomorphism and isometries

1 vote
1 answer
60 views

Summation of C* extensions via Busby invariants

1 vote
1 answer
94 views

How does one show that coev is independent of the choice of basis?

1 vote
1 answer
84 views

Relationship between Calkin Algebra and Fredholm operators

1 vote
1 answer
244 views

Properties of positive linear maps

1 vote
1 answer
61 views

Questions about Arveson's proof on essentially normal operators

1 vote
1 answer
48 views

Sum of extensions in matrix form

1 vote
5 answers
320 views

Find probability of having a female in every group

1 vote
1 answer
211 views

Probability of CD track played on a particular position

1 vote
0 answers
65 views

Explicit notation of matrix

1 vote
1 answer
54 views

Show validity offirst order formula with semantics

1 vote
1 answer
123 views

Evaluate products and sums

1 vote
2 answers
175 views

Faulhaber Formula Identity

1 vote
1 answer
59 views

Exchange coefficient in tensor product

1 vote
3 answers
79 views

Is there a way to show the following equality without induction

1 vote
0 answers
42 views

Notation $\Delta= \partial^{j}\partial_{j}$ for Laplace operator

1 vote
1 answer
33 views

Calulate density with transformation

1 vote
1 answer
226 views

Calculate b such that $ P(-b<X<b) =0.9 $