❁ Mathematics is: ❁

$\qquad$ Topology

${}$ Calculus

Algebra

__ Theory

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Geometry

$\qquad$ Analysis

Logic

${}$ Statistics

$\qquad$ Discrete M.

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__ {Measure, Set, Game, Number, Category, Group, Probability, ...}

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Due to COVID-19

Be safe you all

(Let us recall mainly to wear the mask & to keep social distance whenever possible)