question regarding tensors:

[alikazim1]

In the following tensor, why the dim=1 corrosponds to 3 in torch.Size([1,3,3]). Since there is only one bracket at the second position it should be 1. ? why? please guide me on this. Thanks...

[LivelyAndrew]

this is how i understand it. dim=1 has 3 brackets:
BRACKET1 = [1, 2, 3] BRACKET2= [3, 6, 9] and BRACKET3=[2, 4, 5]

dim0 = [[1, 2, 3], [3, 6, 9], [2, 4, 5]] = 1 bracket (the biggest and outermost bracket)
dim2 = the count of numbers in the innermost bracket (each bracket in dim =1 has 3 numbers in them)
[1, 2, 3] = has 3
[3, 6, 9] = has 3
[2, 4, 5] = has 3