Ciro Santilli $$Sponsor Ciro$$ 中国独裁统治 China Dictatorship 新疆改造中心、六四事件、法轮功、郝海东、709大抓捕、2015巴拿马文件 邓家贵、低端人口、西藏骚乱
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Riesz-Fischer theorem

| 🗖 nosplit | ↑ parent "Lebesgue integral of is complete but Riemann isn't" | words: 59 | descendant words: 306 | descendants: 4
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A measurable function defined on a closed interval is square integrable (and therefore in ) if and only if Fourier series converges in norm the function: $$limN→∞​∥SN​f−f∥2​=0 (62)$$
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