Stack Exchange

Theo Bendit

Apparently, this user prefers to keep an air of mystery about them, which is not an ideal trait in an autobiographer.

top accounts reputation activity subscriptions
Top Questions
Top Answers
89
What is the relation between rank of a matrix, its eigenvalues and eigenvectors
math.stackexchange.com

68
Vector spaces. When in the real world are we checking if it's a vector space or not?
math.stackexchange.com

66
Why is the norm of a matrix larger than its eigenvalue?
math.stackexchange.com

34
What isn't a vector space?
math.stackexchange.com

32
Is it possible for the derivative of a function to grow arbitrarily faster than the function itself?
math.stackexchange.com

29
Why do we show that structures aren't isomorphic by exhibiting a property not shared by one of them?
math.stackexchange.com

26
Cauchy-Schwarz inequality proof (but not the usual one)
math.stackexchange.com

25
What is a practical use for this metric?
math.stackexchange.com

24
The set of all linear maps T:V->W is a vector space
math.stackexchange.com

23
What is the derivative of a function of the form $u(x)^{v(x)}$?
math.stackexchange.com

23
What is the difference between linearly and affinely independent vectors?
math.stackexchange.com

21
Why linear maps act like matrix multiplication?
math.stackexchange.com

20
Is there a name for, or notable structure that uses, weird "distributive laws" such as $a\times(b+c)=b\times a+c\times a$?
math.stackexchange.com

20
Why $f(z+1)=f(z)$ implies $f$ can be expressed as a function of $e^{2\pi iz}$
math.stackexchange.com

19
Why do we add a zero to dividend during long division?
math.stackexchange.com

18
In combinatorics, why is asking the opposite problem often times easier?
math.stackexchange.com

17
Why is the conjugate of a function always convex?
math.stackexchange.com

16
What's the biggest circle that can fit between 2 Gaussian curves?
math.stackexchange.com

15
Prove generalized associative law
math.stackexchange.com

13
Proving this non-empty set and binary operation is a group
math.stackexchange.com

12
Rank 1 operator on an infinite dimensional vector space number of eigenvalues.
math.stackexchange.com

12
How to establish that an anti-idempotent matrix is singular?
math.stackexchange.com

12
Convergence of Newton Method for monotonic polynomials
math.stackexchange.com

12
Are there continuous functions $f,g:\mathbb{R}\longrightarrow\mathbb{R}$ such that for any $x$, $f(g(x))=\sin x$ and $g(f(x))=\cos x$?
math.stackexchange.com

11
Let $f:X\to X $ be continuous. Does $f $ have a fixed point when $X=[0,1)$ or $X=(0,1) $?
math.stackexchange.com

11
Criterion for deciding whether matrix is diagonalizable
math.stackexchange.com

11
Open Problems in Convex Analysis and Convex Optimization
math.stackexchange.com

11
$\{∅\} ∈ \{∅\}$ is this right or wrong?
math.stackexchange.com

11
A question concerning linear algebra
math.stackexchange.com

11
Proving inequality $|\sin(n\theta) |\le n\sin\theta$
math.stackexchange.com

1 2 3 4 5 6