Phira

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327 Answers

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11
What is the largest order of any element in $U_{900}$?
1
calculate the period of an hypotrochoid
1
Translations of Kolmogorov Student Olympiads in Probability Theory
0
Simplifying a polynomial by a nice recursive formula
0
linear fractional transformations fixing a line
0
Find condition for positivity of complex-valued functions
0
expressing some polynomial in terms of symmetric polynomials
1
Name of region defined by two points in higher dimensions
2
Finding all elements of a given order for a group
0
Equivalence between algebraic statements and geometric relations.
1
3D objects in 2D drawing: How to get the size of a box relative to a known plane?
1
(Theoretic) probability greater than 1
1
A cute geometry problem about angle trisectors.
2
What's the adjoint of a zero operator? Is that also a zero operator?
3
Coloring a Hexagon
1
Sum of angles in a polygon - Alternative solution
3
What's the expected value of a lottery ticket?
3
Convergence of series $\sum\limits_{n=0}^\infty\frac{3n}{n!}$
2
Such a thing as a circular arithmetic progression?
3
Is there a $SL(2,\mathbb{Z})$-action on $\mathbb{Z}$?
2
What is the standard sign convention for the Pfaffian?
34
“How long 'til we get there?” Road trip puzzle
1
What is this pattern in the Euclidean algorithm?
4
Super Perfect numbers
1
Conditions for Schur decomposition and its generalization
1
what can a matrix be similar to if and only if there exists a generalized eigenvector?
1
Minimizing (and maximizing) the area of triangles
1
Quaternions and rotations in $\Bbb R^3$
2
A faster way to show that a subgroup is normal
2
Evaluation of the limit $\lim\limits_{n \to \infty } \frac1{\sqrt n}\left(1 + \frac1{\sqrt 2 }+\frac1{\sqrt 3 }+\cdots+\frac1{\sqrt n } \right)$
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