Guthrie's problem: new equivalences and rapid reductions (Q672855)

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scientific article; zbMATH DE number 985228
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English
Guthrie's problem: new equivalences and rapid reductions
scientific article; zbMATH DE number 985228

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    Guthrie's problem: new equivalences and rapid reductions (English)
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    28 February 1997
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    four-colour problem
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    3-edge colouring of pairs of trees
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