Consider the closed forward light cone(adsbygoogle = window.adsbygoogle || []).push({});

[tex] V = \left \lbrace x \in M \mid x^{2} \geq 0, x^{0} \geq 0 \right \rbrace [/tex]

and M denotes Minkowski space.

My question is whether V is a compact set or not. If it is a compact set, how do I show it?

Intuitively I would say it is compact, but I don't know how to proof it.

I hope someone can help me.

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# Light cone

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