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Daan Michiels's user avatar
Daan Michiels's user avatar
Daan Michiels's user avatar
Daan Michiels
  • Member for 12 years, 6 months
  • Last seen this week
  • London, UK
26 votes

How can one solve the equation $\sqrt{x\sqrt{x} - x} = 1-x$?

19 votes

Categorial definition of subsets

13 votes
Accepted

Which Lie groups have Lie algebras admitting an Ad-invariant inner product?

9 votes

How do I prove that $\det A= \det A^T$?

7 votes
Accepted

Where is the mistake in the calculation of $y'$ if $ y = \Bigl( \dfrac{x^2+1}{x^2-1} \Bigr)^{1/4} $?

7 votes

An easy way to remember PEMDAS

6 votes
Accepted

Is a hyperplane defined by four points?

6 votes

Example of two functions that are equal almost everywhere?

5 votes

Write down a $\mathbb Q$-Basis for $\mathbb Q(\alpha, i)$ and show that $\mathbb Q(\alpha, i) = \mathbb Q(\alpha + i)$.

5 votes
Accepted

Show that a prime divisor to $x^4-x^2+1$ has to satisfy $p=1 \pmod{12}$

5 votes
Accepted

Julia Set of polynomials

4 votes
Accepted

Induced automorphisms of regular automorphisms on factor groups

4 votes
Accepted

HSL to RGB conversion

4 votes
Accepted

Deduce dice configuration knowing 2 adjacent faces

4 votes

General Position

3 votes

Finding a function $f: \mathbb{R} \rightarrow \mathbb{R}$ with this property?

3 votes
Accepted

What is $(\Bbb Z/p \Bbb Z)/k(\Bbb Z/p\Bbb Z)$?

3 votes
Accepted

What is the highest coefficient of $(1,\cdots,1)*(e,\cdots,e) \pmod{X^N+1}$?

3 votes
Accepted

Restriction of a differential form to an isotropic submanifold

3 votes

how to calculate the fundamental group using intitutive ideas?

3 votes
Accepted

How to use chain rule to prove $f$ homogeneous of degree $c$ iff $D_x f(x) = cf(x)$?

2 votes
Accepted

The rank of mapping on tangent bundle

2 votes
Accepted

Probability for Coin toss

2 votes
Accepted

Draw a polygon that satisfies this criterion

2 votes
Accepted

Does every group grow either polynomially or superpolynomially?

2 votes
Accepted

How to find the pattern?

2 votes

If $\operatorname{dim} M > \operatorname{dim} N$, is there an injective smooth map $M\to N$?

2 votes
Accepted

Example where $P(n)$ is not valid for induction?

2 votes

A maze about $\pi$.

2 votes
Accepted

Problem - Sum of digits