The course

drinkereasy

There is someone in the pub who, if they drink, everyone drinks.spiralmedium

.no_half_succmedium

No function on applied twice adds exactly one.markovmedium

has infinitely many solutions.waerdenmedium

Any 2-coloring of contains a monochromatic 3-term progression.basel_boundhard

.binary_multiplehard

Every positive integer divides a number written with only 0s and 1s.pisanohard

The Fibonacci sequence is periodic modulo every .levihard

only at and .jacobianhard

The Jacobian conjecture is false.falsoimpossible

Break consistency.