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#### ModusPonens

##### Well-known member

- Jun 26, 2012

- 45

I'd like to know how to solve the following problem: [TEX]\mathbb{R}P^2[/TEX]#[TEX]T^2=\mathbb{R}P^2[/TEX]#[TEX]K^2[/TEX] , where [TEX]\mathbb{R}P^2[/TEX] is the real projective plane, [TEX]T^2[/TEX] is the torus and [TEX]K^2[/TEX] is the Klein bottle.