The property held by some topological spaces that if a subset of such a space has an infinite quantity of points then the subset has at least one accumulation point.
Origin
Named after Bernard Bolzano (1781–1848), a Bohemian mathematician, logician, philosopher, theologian and Catholic priest of Italian descent, and Karl Weierstrass (1815–1897), a German mathematician often cited as the "father of modern analysis".
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