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May
6
comment Probability of winning the lottery the more you play it?
"If you play once, you have a 50% chance of winning. If you play twice, you have doubled your chance of winning it once." So if I play twice, I have a chance of $2\times 50\% = 100\%$ of winning? That doesn't seem right.
May
6
comment Simplest proof that some number is transcendental?
Transcendental numbers are "more common" than algebraic numbers, because almost all numbers are transcendental. That's because there are only countably many algebraic numbers, but uncountably many reals.
May
6
comment How to determine whether a polytope is self-tessellating?
One obvious way to create self-tessellating objects of higher dimension is extrusion of self-tessellating objects of lower dimension.
May
4
comment How to prove $\mathcal{L}^2[(0,1)]$ is a Hilbert Space
Can you please give an explicit example for the non-positive definiteness of the inner product?
May
4
answered $\langle A,B\rangle = \operatorname{tr}(B^*A)$
May
3
comment Discrete math of $i^3$
@Uncountable: There's some irony in someone with that username suggesting the use of induction. :-)
May
3
answered If $ f $ is injective and $ g $ is injective, then $ f \circ g $ is surjective.
May
3
comment Can we have a one-one function from [0,1] to the set of irrational numbers?
@user21820: What exactly do you think I have to justify? That $\pi$ is transcendental is a well-known fact; see e.g. Wikipedia.
May
3
answered Can we have a one-one function from [0,1] to the set of irrational numbers?
May
2
awarded  Vox Populi
May
2
comment Is $f:\mathbb{Q^*} \rightarrow \mathbb{Q}$ by $f(\frac{a}{b}) = \frac{\max{(a,b)}}{\min{(a,b)}}$ a function?
What are the possible values of $a$ and $b$? In particular, can $b$ be negative?
May
2
comment Is there fundamental goal of mathematics?
Does this qualify?
May
2
revised Is there fundamental goal of mathematics?
Corrected spelling of Gödel
May
2
comment Intersection of two sets which are equivalence on set A is always equivalence?
@Sharma: A relation is a set. See my answer.
May
2
revised Intersection of two sets which are equivalence on set A is always equivalence?
added 120 characters in body
May
2
answered Intersection of two sets which are equivalence on set A is always equivalence?
May
2
revised Give an example to show that convergence of $|x_n|$ does not imply the convergence of $x_n$
added 369 characters in body
May
2
answered Give an example to show that convergence of $|x_n|$ does not imply the convergence of $x_n$
May
2
answered What does it mean for two matrices to be orthogonal?
May
2
answered why are equivalence relations called so?