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Are Universes Thicker Than Blackberries?
Are Universes Thicker Than Blackberries?
Discourses on Godel, Magic Hexagrams, Little Red Riding Hood, and Other Mathematical and Pseudoscientific Topics »
 
 
 
 
 

Mathematik und Magie
Mathematik und Magie
Mathematik und Magie »
 
 
 
 
 

When You Were A Tadpole And I Was A Fish: And Other Speculations About This And That
When You Were A Tadpole And I Was A Fish: And Other Speculations About This And That
And Other Speculations about This and That. »
 
 
 
 
 

Phantasmagoria
Phantasmagoria
 »
 
 
 
 
 

Mathematics, Magic And Mystery
Mathematics, Magic And Mystery
Challenging mathematical puzzles and tricks that may be played with cards, common objects, special equipment, drawings, and pure numbers. »
 
 
 
 
 

Penrose Tiles To Trapdoor Ciphers
Penrose Tiles To Trapdoor Ciphers
And The Return Of Dr Matrix »
 
 
 
 
 

The Jinn from Hyperspace
The Jinn from Hyperspace
And Other Scribblings - Both Serious And Whimsical »
 
 
 
 
 

Classic Brainteasers
Classic Brainteasers
 »