Add the basic parity tensor class and its arithmetic operators.

[hzhangxyz]

No description provided.

[Copilot]

Pull Request Overview

This PR introduces a basic ParityTensor class that wraps PyTorch tensors with additional edge information representing even/odd parts for each dimension, along with comprehensive arithmetic operator support.

• Implements a dataclass-based ParityTensor with validation for edge-tensor dimension compatibility
• Adds full arithmetic operator support (addition, subtraction, multiplication, division) with both ParityTensor and scalar operands
• Exports the new class through the package's __init__.py module

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
parity_tensor/parity_tensor.py	Implements the core ParityTensor class with edge validation and arithmetic operators
parity_tensor/init.py	Exports the new ParityTensor class in the package's public API

[Copilot]

Element-wise multiplication between ParityTensors with the same edges may not preserve the parity structure. Consider whether multiplication should validate edge compatibility or if it should have different behavior than addition/subtraction.

Suggested change

	self._validate_edge_compatibility(other)
	self._validate_edge_compatibility(other)
	self._validate_parity_structure(other)

[Copilot]

Element-wise division between ParityTensors with the same edges may not preserve the parity structure. Consider whether division should validate edge compatibility or if it should have different behavior than addition/subtraction.

Suggested change

	return ParityTensor(
	edges=self.edges,
	tensor=self.tensor / other.tensor,
	)
	result = ParityTensor(
	edges=self.edges,
	tensor=self.tensor / other.tensor,
	)
	result._validate_parity_preservation()
	return result

[Copilot]

No input validation is performed on the 'other' parameter before attempting tensor operations. This could lead to unexpected behavior or errors if 'other' is not a valid operand for tensor arithmetic.

Suggested change

	)
	)
	if not isinstance(other, (int, float, torch.Tensor)):
	raise TypeError(f"Unsupported operand type(s) for +: 'ParityTensor' and '{type(other).__name__}'")