en 1answer
Faust's questions - English 1answer
336 questions.
Questions
Answers
Let $A=\mathbb C[x] $ prove there is no norm on $A$ in which it is a C* algebra
1
1
answers,
0
favourites,
60
views
c-star-algebras
Cycle edges cut of a 3 regular graph
2
1
answers,
1
favourites,
44
views
graph-theory
Basic analysis/topology of a sequence proof
3
answers,
0
favourites,
60
views
general-topology
prove the following lemma about a compact space and a ultrametric.
1
answers,
0
favourites,
35
views
general-topology
compactness
ultrametric
Did the ancient Greeks know that $\pi$ was not the root of some polynomial?
0
answers,
0
favourites,
131
views
real-analysis
abstract-algebra
soft-question
math-history
Homomorphism between compact Hausdorff spaces.
2
1
answers,
0
favourites,
71
views
abstract-algebra
general-topology
c-star-algebras
minimal equivalence relations free action of a group G on X
0
answers,
0
favourites,
25
views
general-topology
dynamical-systems
cantor-set
looking for a better way to prove basic graph theory result.
1
2
answers,
1
favourites,
50
views
graph-theory
Prove that the edges of the cubic graph G cannot be coloured with three colours such that adjacent edges have different colours.
1
1
answers,
0
favourites,
51
views
graph-theory
Divisibility of $\sigma (n) $
2
1
answers,
0
favourites,
50
views
number-theory
conditional probability question involving cards.
2
2
answers,
0
favourites,
55
views
combinatorics
Conditional probability question involving balls w/o replacement
3
6
answers,
0
favourites,
295
views
probability
Can an upper triangular matrix be put in jordan form using upper triangular matrices and permutations only.
3
1
answers,
2
favourites,
73
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,
62
views
probability
combinatorics
inclusion-exclusion
Combinatorics card counting question.
1
2
answers,
0
favourites,
130
views
combinatorics
Basic PIE question appears to be wrong?
3
0
answers,
0
favourites,
56
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,
59
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,
67
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,
46
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,
51
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,
30
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,
53
views
number-theory
A rational number is approximated to order 1 and to no higher order.
1
answers,
0
favourites,
58
views
number-theory
weird gcd problem in number theory
1
1
answers,
0
favourites,
61
views
number-theory
using a sum to give a formula for the nth prime.
0
answers,
0
favourites,
83
views
number-theory
show that $\sum \frac {\mu(n)}{10^n}$ is irrational
1
1
answers,
0
favourites,
103
views
number-theory
Prove diagonalizabilty from a polynomial in $T$
1
answers,
0
favourites,
51
views
linear-algebra
diagonalization
minimal-polynomials
1
2
3
4
5
...
12
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