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4CT_Inadequacy_Explanation.png ‎(468 × 237 pixels, file size: 4 KB, MIME type: image/png)

Summary

Description
English: A two-pieces "country" on a plane makes the map coloring problem equivalent to coloring a map on a torus.
Date
Source Own work
Author CiaPan
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Captions

Four Color theorem inadequacy for a not-connected two-pieces "country"

Items portrayed in this file

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copyrighted

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copyright license

Creative Commons Attribution-ShareAlike 4.0 International

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source of file

original creation by uploader

inception

2 March 2021

media type

image/png

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checksum

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determination method: SHA-1

data size

4,409 byte

height

237 pixel

width

468 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current15:06, 2 March 2021Thumbnail for version as of 15:06, 2 March 2021468 × 237 (4 KB)CiaPanUploaded own work with UploadWizard
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