Upsilon (Υ) is the twentieth letter of the Greek alphabet that represents the number 400 in the ancient Greek numeral system. It originated from the Phoenician letter waw and remains part of the Greek writing system used today.
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O úpsilon (Υ ou υ; em grego: ύψιλον, transl.: ýpsilon), ípsilon, ipsilão, ípsilo ou i grego é a vigésima letra do alfabeto grego. No sistema numérico grego, vale 400. No modo matemático do LaTeX, é representada por e .
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).