@article{202305.0311,
	doi = {10.20944/preprints202305.0311.v1},
	url = {https://doi.org/10.20944/preprints202305.0311.v1},
	year = 2023,
	month = {May},
	publisher = {Preprints},
	author = {Ji Peng},
	title = {Formal Calculation},
	journal = {Preprints}
}