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分块矩阵怎么求逆？ - 知乎 下面是一些分块矩阵求逆公式： 另可参考 Block matrix on Wikipedia 2018 4 3 补充 补充两个参考文献，都是对工科很实用的矩阵手册： D S Bernstein, Matrix mathematics: Theory, facts, and formulas with application to linear systems theory Princeton, NJ: Princeton University Press, 2005 The Matrix Cookbook
英文文献如何正确导出为参考文献格式？ - 知乎 英文专业的小伙伴们，还在为论文的参考文献格式苦恼和纠结吗？不必担心，小编都整理好了，实实在在的干货！ 英文参考文献格式一般来说有APA（美国心理学会American Psychological Association）、MLA（美国现代语言协会Modern Language Association）、哈佛文献参考系统（Harvard referencing system）几种。 APA APA参考
为什么数学教材这么多「显然」「易得」「注意到」「不妨设」等词汇？ - 知乎 Princeton曾经流传的数学家们对“显然 (obvious)”的定义。 if Wedderburn says it's obvious, everybody in the room has seen it ten minutes ago if Bohnenblust says it's obvious, it's obvious if Bochner says it's obvious, you can figure it out in half an hour