热的解析理论-畅读网

　　　　

热的解析理论

作者：傅立叶

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内容简介:

傅立叶（1768－1830）是19世纪法国数学家和数学物理学家。他的工作对数学和物理学都产生了很大影响。人们通常只注意到傅立叶级数和傅立叶积分这两个成果，而忽视了傅立叶的主要成就。这本《热的解析理论》是傅立叶的代表作，作者通过数学分析发现一些热的作用所服从的规律，集中反映了他在数学和物理学方面所作的重要贡献，是被公认的数学经典文献之。

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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 48 LIMIT 1 [ RunTime:0.001974s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.007653s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.008176s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1771726609 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:1.026862s ]

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