Math Gift Websites
Acme Klein Bottle
- kleinbottle.com
Acme Klein Bottle makes and sells glass Klein Bottles. Come visit!
TheoryMine | Home
- theorymine.co.uk
The gift of personalised, newly discovered theorems: immortalise in mathematics your loves, friends, teachers, and even your favourite pets by naming a new mathematical theorem.
Klein is 4D bottle
- klein4d.com
This Klein bottle, I heard it will never be filled up? Where can I buy it? Go here! Let's start exploring topology from this moment, it is very interesting.