smackcrane
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 10 There exist an infinite subset $S\subseteq\mathbb{R}^3$ such that any three vectors in $S$ are linearly independent. 10 Average of multiple vectors 9 Percentage of primes among the natural numbers 7 Converting multiplying fractions to sum of fractions 6 Closed formula for entries of “Pascal's half triangle”

### Reputation (2,046)

 +5 if $S$ is a ring (possibly without identity) with no proper left ideals, then either $S^2=0$ or $S$ is a division ring. +5 How does one calculate genus of an algebraic curve? +10 Average of multiple vectors +5 $k$-out-of-$n$ system probabilities

### Questions (15)

 13 How does one calculate genus of an algebraic curve? 8 The preimage of a maximal ideal is maximal 5 Can continuity be proven in terms of closed sets? 4 How to show that this ring $S/A$ has no zero divisors? 4 Every subspace of a compact space is compact?

### Tags (54)

 16 linear-algebra × 6 11 algebra-precalculus × 4 15 calculus × 8 11 vector-spaces × 2 14 probability × 9 10 average 13 combinatorics × 5 9 prime-numbers 13 elementary-number-theory × 2 7 terminology × 2

### Accounts (9)

 Mathematics 2,046 rep 1023 Stack Overflow 910 rep 614 Skeptics 294 rep 24 Mathematica 151 rep 3 Area 51 151 rep