Images for Mathematics

colouring a surface (5)

Jordan's theorem and the three houses problem (27)

**surfaces obtained from a rectangle (31)**

what is a surface? (6)

the horned sphere (10)

homeomorphisms (14)

Jordan's theorem and the three houses problem (27)

what is a surface? (6)

the horned sphere (10)

homeomorphisms (14)

How to get a bitorus from a decagon: this is the first step. Here you can see the second s...

By identifying opposite sides of a rectangle, we get a torus. See also the interactive ani...

By identifying the opposite sides of a rectangle you get a torus. See also the interactive...

We can get a Moebius strip by taking a rectangle and pasting together two opposite sides a...

This animation shows that, by pasting together two opposite sides of a square, we can get ...

This map of Milan of the sixteenth century is a rough decagon. We can imagine to identify ...

This map of Milan of the sixteenth century is a rough decagon. We can imagine to identify ...

How to get a bitorus from a decagon: this is the second step. Here you can see the third s...

How to get a bitorus from a decagon: this is the third step. Here you can see the fourth s...

How to get a bitorus from a decagon: this is the fourth step. Here you can see the fifth s...

surfaces obtained from a rectangle