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The infinitely stacked world \(D^2 \times \mathbb{R}^2\) is the universal cover of Bobs world \(S^1 \times D^2\), as it is simply connected and covers Bobs world (see the definition of universal cover above).
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Back in December 2024, when Microsoft invited users to join the Copilot Discord server through an official X post, the response was largely curious and enthusiastic, with people willing to explore the AI’s capabilities.
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The Iran conflict has driven the oil price past $90 a barrel to its highest weekly gains since the Covid-19 pandemic six years ago, threatening a fresh rise in global inflation.
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