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Montrons-que-B-2-0-1-est-homeomorphe-a-R-2-Ou-B-2-0-1-boule-unite-de-R-2-




Question Number 161196 by Ar Brandon last updated on 13/Dec/21
Montrons que B_2 (0, 1) est homeomorphe a^�  R^2 .  Ou^�  B_2 (0, 1)=boule unite^�  de R^2 .
$$\mathrm{Montrons}\:\mathrm{que}\:\mathrm{B}_{\mathrm{2}} \left(\mathrm{0},\:\mathrm{1}\right)\:\mathrm{est}\:\mathrm{homeomorphe}\:\grave {\mathrm{a}}\:\mathbb{R}^{\mathrm{2}} . \\ $$$$\mathrm{O}\grave {\mathrm{u}}\:\mathrm{B}_{\mathrm{2}} \left(\mathrm{0},\:\mathrm{1}\right)=\mathrm{boule}\:\mathrm{unit}\acute {\mathrm{e}}\:\mathrm{de}\:\mathbb{R}^{\mathrm{2}} . \\ $$

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