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arXiv · 2503.22839

The Universe is Odd

Shiyin Shen·Nan Li
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Abstract

The cosmological principle posits that the universe does not exhibit any specific preference for position or direction. However, it remains unclear whether the universe has a distinct preference for parity: whether certain properties are more likely to be classified as even or odd. In this study, we analyze the largest available galaxy group catalogs to explore this hypothesis: specifically, whether the number of galaxies within a galaxy group or cluster is more likely to be odd or even. Our findings convincingly indicate that the universe indeed favors odd numbers, with results achieving a significance level well above the $4.1-\sigma$ threshold.

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Shiyin Shen, Nan Li. 2025-03-28. The Universe is Odd. https://arxiv.org/abs/2503.22839

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