8 : Ralph : Constructive proof of GCD(n,n+1)=1 --> infinite set of primes.
Q1 of JO-39-aut
9 : Elizabeth : Sheet of mixed problems --- with rewards.
10 : Zoltan : Two proofs of sum of odds = square.
Q1 of JO-39-aut
11 : Peter : Proof that diagonals of parallelogram bisect.
Proof of infinitude of primes.
ToT Q1, Q2 of SO-39-aut
12 : David : ToT Q1 of SO-39-aut
8 : Peter : ToT Q3, Q4 of JO-39-aut
9 : Zoltan : Two proofs of sum of odds = square.
Counting regions inside a circle.
ToT Q1 of JO-39-aut
10 : Ralph : Constructive proof of GCD(n,n+1)=1 --> infinite set of primes.
Q2,3 of JO-39-aut
11 : David : Q3,4 of SO-39-aut
12 : (---) : Q2,3 of SO-39-aut
8 : Elizabeth : Sheet of mixed problems --- with rewards.
9 : Tryon : ToT Q2 of JO-39-aut
10 : David + : ToT Q5 of JO-39-aut
Tamiru
11 : Chris : ToT Q5 of SO-39-aut
12 : Zoltan : Proof that sqrt(2) is irrational.
Proof that harmonic sum diverges.
ToT Q4 of SO-39-aut
8 : David : ToT Q5 of JO-39-aut
9 : Tryon : ToT Q2,3,4 of JA-39-aut
10 : Ralph : AM-GM inequality thrice : contradiction,
algebraic deduction,
geometric deduction
ToT Q4 of JA-39-aut
11 : Zoltan : Proof that harmonic sum diverges.
Archimedes pi computation (c.f. pi=4)
Method of computing limits
ToT Q1 of SA-39-aut
12 : Peter : ToT Q5 of SO-39-aut
Q1 of SA-39-aut
8 : Zoltan : ToT Q4,5 of JA-39-aut
Butterfly theorem proof
Thales theorem proof (right triangle on diameter)
9 : William : ToT Q4 of JA-39-aut
10 : Ralph : Log_10(3) is irrational
ToT Q4(c) of JA-39-aut
Sqrt(2) is irrational
EFM : soln to cubic, quartic, quintic, etc,
drops in ocean vs 35!
11+12 : Peter : ToT Q1 of SA-39-aut Keys and doors