Tensors: The Things That Flow

A tensor is a container for numbers with a shape (like [batch, height, width, channels] for images).

• rank: number of dimensions (scalar=0D, vector=1D, matrix=2D, etc.).
• dtype: numeric type (float32, int32, …).

Mental model: a tensor is a spreadsheet that can have many tabs (dimensions). Ops know how to broadcast and combine them.