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| Enlightened | First to answer and accepted with score of 10 or more. This badge can be awarded multiple times. |
Marc van Leeuwen earned this badge 3 times |
jan 8 at 17:39
Is there a topological notion of the derivative?
nov 21 at 16:29
$GL_n(\mathbb{R})$ is cyclic?
jul 12 at 23:53
Can $\mathbb RP^2$ cover $\mathbb S^2$?
