Poritsky, Hillel On operations permutable with the Laplacian. (English) Zbl 0005.36001 Am. J. Math. 54, 667-691 (1932). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Keywords:special functions × Cite Format Result Cite Review PDF Full Text: DOI