Tristan Duquesne's user avatar
Tristan Duquesne's user avatar
Tristan Duquesne's user avatar
Tristan Duquesne
  • Member for 4 years, 11 months
  • Last seen this week
17 votes
Accepted

Why are spheres with two holes and cylinders homeomorphic?

10 votes
Accepted

Is there a power of $2$ whose last digit is a $0$?

7 votes

Gradient: field of tangent vectors vs. normal to surface at a point

4 votes

Identity matrix over $\Bbb{Z}_2$

4 votes

What does it mean for an inner product to induce a norm?

3 votes

Find numbers from GCD and LCM

3 votes

Why do the functions $e^{{-x}^2}$ and $\cos^{2}(x)$ have similar values for $x \approx 0$?

3 votes
Accepted

How to formally define direction in Euclidean space?

3 votes
Accepted

Connections between Clifford algebra and polynomials?

2 votes

Find the n-th base 2 palindrome

2 votes

Ideal generated by $v\otimes v - \Phi(v)1$

2 votes
Accepted

From the set $\mathbb{Z}_8=\mathbb{Z}/8\mathbb{Z}$ select all elements for which there exists an inverse element with respect to multiplication

2 votes

Directional derivative of Cartesian coordinate functions

2 votes

Why can inverse functions be determined by manipulating equations?

2 votes

Choice set between a single element and nothing

2 votes
Accepted

Finding the upper bound of a linear functional

2 votes
Accepted

Notation: setting multiple variables to zero

2 votes

How should these be read? $-x$ , $-(2)$ , $-2x$ , $\pm x$

2 votes

Gaining an intuition for how changes to the inputs of an equation affect the output

2 votes
Accepted

Prove that vector $[3,2]$ is tangent to the set $\{(x,y): x^2 - y^3 = 0\}$ at point $(1,1)$.

2 votes

Why to use learning_rate * derivative in gradient descent instead of learning_rate * constant

2 votes

Why do the antiderivatives of $y=1$ follow $e^{x}$?

2 votes
Accepted

A proof of 1/0 = ∞

2 votes

Is there a recognized concept in mathematics to number systems that have an absolute value less than zero?

2 votes

Geometric view of isomorphism between sets

2 votes
Accepted

Why do you we say a is congruent to b mod n and not equal?

2 votes

A question about vectorial spaces of infinite dimension.

2 votes

Why is observing 100 heads for a fair coin flips surprising?

2 votes

Can $\Bbb R^+$ form a field?

2 votes

How many strings of length $5$ can I make out of the letters A,B and C (if I am allowed to use letters more than once)?