Woit · §2.1 Some representation theory
英文原文
Woit §2.1 says its representations are differentiable maps; this is a mention, not the general definition for maps between manifolds. The preceding real-valued-function definition in Szekeres §15.2 is a separate case.
原文相关讨论摘录
We are mainly interested in the case of a Lie group, where is a differentiable manifold of some dimension. In such a case we will restrict attention to representations given by differentiable maps . As a space, is the space of all by complex matrices, with the locus of non-invertible (zero determinant) elements removed. Choosing local coordinates on will be given by real functions on and the condition that is a differentiable manifold means that the derivative of is consistently defined. Our focus will be not on the general case, but on the study of certain specific Lie groups and representations which are of central interest in quantum mechanics. For these representations one will be able to readily see that the maps are differentiable.
来源与版本
正文:英文原文
来源版本:2025-10-20
原文位置:§2.1;PDF 页 31;印刷页 14
处理记录:PDF 文字层提取;MinerU OCR;AI 辅助转录对照
核对状态:AI 辅助转录核对,未作人工审阅或数学审稿
来源 PDF SHA-256:5a1941b2443b54d5db3d055f1e5ba390429b7a728475258017aaac87ee85a837
中文译文
Woit §2.1 提及其表示是可微映射;这不是流形之间映射的一般定义。Szekeres §15.2 前文的实值函数定义属于另一情形。
译文摘录
我们主要感兴趣的是为李群的情形,此时是某个维数的可微流形。在这种情况下,我们将只关注由可微映射给出的表示。作为空间,是所有乘复矩阵构成的空间,并去掉不可逆(行列式为零)元素构成的轨迹。在上选取局部坐标将由上的个实函数给出,而是可微流形这一条件意味着的导数被一致地定义。我们的重点不是一般情形,而是研究量子力学中具有核心意义的某些特定李群和表示。对于这些表示,人们将能够容易地看出映射是可微的。
来源与版本
正文:中文译文
来源版本:2025-10-20
原文位置:§2.1;PDF 页 31;印刷页 14
处理记录:machine-translation/deepseek-v4.1-flash
核对状态:机器译稿 · 待校对
Szekeres · §15.2 可微映射与曲线
英文原文
This range defines maps M→N through the coordinate representation ψ∘α∘φ⁻¹. It excludes the preceding real-valued map f:M→R definition and the following parametrized-curve definition.
原文定义摘录
If and are differentiable manifolds, dimensions and respectively, then a map is differentiable at if for any pair of coordinate charts ) and covering and respectively, its coordinate representation
is differentiable at . As for differentiable real-valued functions this definition is independent of the choice of charts. The map is represented by differentiable real-valued functions
where
来源与版本
正文:英文原文
来源版本:source-snapshot-bc3404156f6e
原文位置:§15.2;PDF 页 7;印刷页 416
处理记录:既有整理 OCR 稿
核对状态:尚未完成转录核对