Joe Z.

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2,824 reputation
1517
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age 19
visits member for 1 year, 3 months
seen Apr 29 at 15:26
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52 Answers

newest activity votes
6
Correct $(0.11111111…)_{2}=(10)_{2}$?
4
XOR for 10 and 20
94
Unusual 5th grade problem, how to solve it
0
Proof of “Freshman's dream” in commutative rings
5
Best Fake Proofs? (A M.SE April Fools Day collection)
4
Another puzzle with locks
2
Can $\frac{a}{b} + \frac{b}{a}$ ever be bounded from above, if $a, b \in \mathbb{R}$?
1
Why is 0=0+0 not used as definition of 0?
2
Prove that line through intersection of line through foots of heights and opposite line and orthocenter is perpendicular to median.
0
Need algorithm to take “max” of scores, but with “quality” weighting
0
Subtract 11011001 from (00100011 + 00001101) using 8-bit signed magnitude arithmetic
2
What was the first bit of mathematics that made you realize that math is beautiful? (For children's book)
1
What was the first bit of mathematics that made you realize that math is beautiful? (For children's book)
1
What is a good measure of “controversy”, given a support score and opposition score?
0
Finding all permutations containing B elements from a set of size A elements
2
$10\times10$ table of numbers with differences of adjacent entries no more than 5
0
Find all solutions of the equation $x! + y! = z!$
1
How to get as much pie as possible!
0
Is it possible to express a sum as a difference operation?
1
Estimating component variance for a sum of random variables
0
quadratic equation
5
Calculate fractional part in $\displaystyle \left\{\frac{22^{56}}{17}\right\}$
2
Proof that a n-hypercube is n-vertex-connected
0
Romantic Math Equations
0
The set of all functions from $\mathbb{N} \to \{0, 1\}$ is uncountable?
1
Is $\forall x\,\exists y\, Q(x, y)$ the same as $\exists y\,\forall x\,Q(x, y)$?
0
A Math Olympiad question regarding Geometry
8
What does $\forall x \exists y(x + y = 0)$ mean?
2
A question about conditional independence
1
Choosing between $n$ things using dice?
1 2