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Lynn

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summation

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30 posts edited

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Answers (45)

Votes Activity Newest

203	How can you prove that $1+ 5+ 9 + \cdots +(4n-3) = 2n^{2} - n$ without using induction?
11	How to find the value of an unknown exponent?
10	A condition for being a prime: $\;\forall m,n\in\mathbb Z^+\!:\,p=m+n\implies \gcd(m,n)=1$
9	How to prove that all odd powers of two add one are multiples of three
8	Function that looks a lot like exponential, but isn't

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Reputation (3,063)

+20	Is “closedness” a proper word?
+10	Is there a solution to $2^a+2^b = 10^c+10^d$, with $0 \leq a < b$ and $0 \leq c < d$?
+10	Prove that if $g^2=e$ for all $g$ in $G$ then $G$ is Abelian.
+10	Using a determinant to find the Cartesian equation for a plane from its parametric equations

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Questions (18)

Votes Activity Newest

12	Proof that the Rubik’s Cube group is 2-generated
6	Is there a solution to $2^a+2^b = 10^c+10^d$, with $0 \leq a < b$ and $0 \leq c < d$?
6	Irrationality of $\min$ and $\arg\,\min$ of $\Gamma\|_{[1, 2]}$
5	Probability of making it across a path of $n$ tiles through random walk
5	Why is $S$ specified to be nonempty in Axler’s definition of function spaces $\mathbf F^S$?

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Tags (82)

208 summation × 4	14 exponentiation × 3
206 induction × 3	12 elementary-set-theory × 4
203 arithmetic-progressions	12 algebra-precalculus × 4
19 exponential-function × 2	12 divisibility × 2
15 combinatorics × 8	12 elementary-number-theory × 2

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5	Points on a 2D plane spanned by a turtle graphics system

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