{"paper":{"title":"New series for powers of $\\pi$ and related congruences","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.CO"],"primary_cat":"math.NT","authors_text":"Zhi-Wei Sun","submitted_at":"2019-11-13T17:30:12Z","abstract_excerpt":"Via symbolic computation we deduce 97 new type series for powers of $\\pi$ related to Ramanujan-type series. Here are three typical examples: $$\\sum_{k=0}^\\infty \\frac{P(k) \\binom{2k}k\\binom{3k}k \\binom{6k}{3k}}{(k+1)(2k-1)(6k-1)(-640320)^{3k}}\n  =\\frac{18\\times557403^3\\sqrt{10005}}{5\\pi}$$ with \\begin{align*}P(k) = &637379600041024803108 k^2 + 657229991696087780968 k \\\\&+ 19850391655004126179, \\end{align*} $$\\sum_{k=1}^\\infty \\frac{(3k+1)16^k}{(2k+1)^2k^3\\binom{2k}k^3} = \\frac{\\pi^2-8}2,$$ and $$\\sum_{n=0}^\\infty\\frac{3n+1}{(-100)^n} \\sum_{k=0}^n{n\\choose k}^2T_k(1,25)T_{n-k}(1,25) = \\frac{25}"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.05456","kind":"arxiv","version":10},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1911.05456/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}