en 1answer
Faust's questions - English 1answer
327 questions.
Questions
Answers
Divisibility of $\sigma (n) $
2
1
answers,
0
favourites,
49
views
number-theory
conditional probability question involving cards.
2
2
answers,
0
favourites,
51
views
combinatorics
Conditional probability question involving balls w/o replacement
3
6
answers,
0
favourites,
251
views
probability
Can an upper triangular matrix be put in jordan form using upper triangular matrices and permutations only.
3
1
answers,
2
favourites,
59
views
linear-algebra
What is the probability that at least one pottery project and at least one mixed media project will be shown?
2
2
answers,
1
favourites,
56
views
probability
combinatorics
inclusion-exclusion
Combinatorics card counting question.
1
2
answers,
0
favourites,
47
views
combinatorics
Basic PIE question appears to be wrong?
3
0
answers,
0
favourites,
54
views
combinatorics
inclusion-exclusion
Suppose that $T\in \mathcal L (V)$. prove that T is normal iff there exists a polynomal $f(x) \in \Bbb C [x] $ s.t $T^* = f(T)$
1
1
answers,
0
favourites,
56
views
linear-algebra
Find an inner product.
1
2
answers,
0
favourites,
78
views
linear-algebra
Proof of one of Minkowskis theorem's (geometry of numbers)
1
answers,
0
favourites,
63
views
geometry
elementary-number-theory
reference-request
Guess the arithmetical function based on its Riemann zeta form
1
answers,
0
favourites,
56
views
number-theory
how to make Dirichlet character table modulo $7$
0
answers,
0
favourites,
39
views
group-theory
number-theory
Suppose that $ T\in \mathcal L (V) $ is normal. Prove that $T^{*} = -T $ iff every eigenvalue of T is purely imaginary.
1
answers,
0
favourites,
50
views
linear-algebra
Prove that for every polynomial $p(x) \in \Bbb C [x] $ that $p(x) \in \operatorname{Ann} (T) \iff \bar{p}(x) \in \operatorname{Ann} (T^{*}) $
2
1
answers,
0
favourites,
28
views
linear-algebra
Blichtfeldt's theorem in higher dimensions.
0
answers,
0
favourites,
35
views
geometry
number-theory
Algebraic of degree n numbers and two equivalent? theorems
0
answers,
0
favourites,
52
views
number-theory
A rational number is approximated to order 1 and to no higher order.
1
answers,
0
favourites,
55
views
number-theory
weird gcd problem in number theory
1
1
answers,
0
favourites,
59
views
number-theory
using a sum to give a formula for the nth prime.
0
answers,
0
favourites,
78
views
number-theory
show that $\sum \frac {\mu(n)}{10^n}$ is irrational
1
1
answers,
0
favourites,
94
views
number-theory
Prove diagonalizabilty from a polynomial in $T$
1
answers,
0
favourites,
48
views
linear-algebra
diagonalization
minimal-polynomials
Injectivity checking of $ ( T- \mu I)|_{G_{\lambda}(T) }$
0
answers,
0
favourites,
30
views
linear-algebra
proof-verification
Prove that T is diagonalizable if and only if the minimal polynomial of T has no repeated roots.
2
2
answers,
1
favourites,
366
views
linear-algebra
Question about nilpotent operators finite and an infinite counterexample
2
1
answers,
0
favourites,
35
views
linear-algebra
A collection of most of the properties about a linear operator and its trace.
1
2
answers,
0
favourites,
105
views
linear-algebra
decomposing and the summing a sum.
3
1
answers,
0
favourites,
81
views
number-theory
For each intger $k \geq 1 $, determine the average order of $\sigma_k(n)$
0
answers,
0
favourites,
52
views
number-theory
Counting argument for $\sum \frac{\sigma}{n}$
3
answers,
0
favourites,
56
views
number-theory
Quotient topology function question.
2
answers,
0
favourites,
41
views
general-topology
Dual space of infinite vector space with finite support construction of isomorphism to $\Bbb R^{\infty} $
0
answers,
0
favourites,
43
views
linear-algebra
abstract-algebra
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