STEVE'S MATH PAGE
Of course there is no
missing dollar. Adding $27 and $2 to get $29 is an irrelevant
operation. They paid $27 - $2 went to the dishonest waiter, and
$25 went to the restaurant.
The problem here is
that every positive number has two square roots - one positive and
one negative. The last step, if correct, would read :
and this is true. You
Limerick by Jon Saxton.
outer circle has one-to-one contact with the surface. The inner
circle does not have one-to-one contact with the dotted line. It
slides and turns at the same time.
A special case of
the Borsuk-Ulam theorem.