Because of my own categorization habits, the practice set is not displayed in the left-bar file system.
(D:\User15406\Acaleph\conda_envs\portal_env) PS D:\User15406\All\FilePathForLearning\AI> jupyter lab, d2l(3.9)
Below is the practice set of PyTorch.

Tensor operations (reference guidance)

create  create-by-random  create-by-logical-judgment  create-by-clone  

element-wise-operations(same shapes)  broadcasting-mechanism(different shapes)  

visit--new-assignment--change-to-other-objects  

concatenate  

tensor-base  

Linear Algebra basics (reference guidance)

Scalar  Vector  Matrix  Tensor  

Basics-of-tensor-algorithms  

Dimensional-Reduction  

Dot-Product  Matrix-Vector-Product  Matrix-Matrix-Multiplication  

Norm  

Calculus (reference guidance)

Derivative-and-Differential  Partial-derivatives---Gradient  

Automatic-Differentiation