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M10687
  • Member for 6 years, 7 months
  • Last seen more than 2 years ago
22 votes
Accepted

Proof that rational polynomials have at least one rational root

13 votes
Accepted

Only 3 Basis Vectors for $\mathbb{R}^4$.

9 votes
Accepted

Definition of Cauchy Sequence

6 votes
Accepted

Is “all swans are white” equivalent to “if it is not white, then it is not a swan”?

5 votes

Disprove: $f\circ g = f \circ h \implies g=h$ for a surjective function $f$

5 votes
Accepted

Why do we minimize the squared norm instead of the norm in this optimization problem?

5 votes
Accepted

Divergence of laplacian

5 votes
Accepted

$\mathbb{R}$ is a closed subset of $\mathbb{R}$

5 votes

What is the formal, precise definition of area (and that of volume) in geometry?

5 votes

Linear Algebra Versus Functional Analysis

4 votes

If the sequence $(a_n) $ converges, then $(a_{n-1}) $ also converges to the same limit as $(a_n) $

3 votes

Open sets in $\mathbb{R}$

3 votes

Recalling and applying theorems for solving problem

3 votes
Accepted

Why must there exist a sequence $r_k ∈ R$ such that $r_k→r$?

3 votes

Question on proof that closed subset of compact metric space is compact

3 votes

Every non zero ideal prime then is every prime ideal maximal

3 votes

Intersection of uncountable sets.

3 votes

Isomorphic normal subgroups

3 votes

Show that $U \subset S$ open in S $\iff$ there exists an open set $U'$ in $X$ such that $U=U' \cap S $

3 votes

Learning mathematics from MIT OCW? Is it enough?

2 votes
Accepted

Known facts about factorization of p-1 for prime p.

2 votes
Accepted

what is $\frac{d}{d(ax)}f(x)$ and $\frac{d}{d(ax)}f(x)$

2 votes
Accepted

Dual space with $W=\ker T$

2 votes
Accepted

Confusion with properties of radians

2 votes
Accepted

Deriving a bounding $\delta$ of an interior point

2 votes
Accepted

Linear Algebra: Sum of Subspaces is also subspace

2 votes

Binomial Theorem: does $\sum\limits_{i=0}^{n}{{n}\choose{i}} = \dfrac{1}{2}\sum\limits_{i=0}^{n+1}{{n+1}\choose{i}}$?

2 votes

What is a good book for learning math from the very basic?

2 votes

Equivalence relation on a continuum

2 votes

Intuition/motivation/why should I care about (definition of) support