По запросу: "математические кнопки" найдено 92 иконки.

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research--bloch-sphere
Clarity Icon This is shape (source) for Clarity vector icon theme for gtk Clarity Icon This is shape (source) for Clarity vector icon theme for gtk Jakub Jankiewicz Jakub Jankiewicz 2010 image/svg+xml
number--6
pushpin-sticky Created with Sketch Beta.
number--8
number17
Clarity Icon This is shape (source) for Clarity vector icon theme for gtk Clarity Icon This is shape (source) for Clarity vector icon theme for gtk Jakub Jankiewicz Jakub Jankiewicz 2010 image/svg+xml
puzzle
math-minus-box image/svg+xml math-minus-box