Coloring planar Feynman diagrams in spinor quantum electrodynamics, is a non
trivial model soluble without computer. Four colors are necessary and
sufficient.Comment: 8 page

Petermann, A.

English

arXiv

Coloring planar Feynman diagrams in spinor quantum electrodynamics, is a non trivial model soluble without computer. Four colors are necessary and sufficient.Coloring planar Feynman diagrams in spinor quantum electrodynamics, is a non trivial model soluble without computer. Four colors are necessary and sufficient

On the Four-Color-Map Theorem

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