Closure Systems

reference request - What happens if you strip everything but the "between" relation in metric spaces - MathOverflow

• url: https://mathoverflow.net/questions/356188/what-happens-if-you-strip-everything-but-the-between-relation-in-metric-spaces

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soft question - Why does intersection always preserve \"closed\" structures? - Mathematics Stack Exchange

• url: https://math.stackexchange.com/questions/3602374/why-does-intersection-always-preserve-closed-structures

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