Heilbronn, H. A. On discrete harmonic functions. (English) Zbl 0033.06303 Proc. Camb. Philos. Soc. 45, 194-206 (1949). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 ReviewsCited in 15 Documents MathOverflow Questions: The origin of Discrete ‘Liouville’s theorem’ Keywords:Partial differential equations PDFBibTeX XMLCite \textit{H. A. Heilbronn}, Proc. Camb. Philos. Soc. 45, 194--206 (1949; Zbl 0033.06303)