Emch, Arnold Über symmetrische Monoide und Kegel. (German) Zbl 0007.32305 Comment. Math. Helv. 6, 133-143 (1933). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Keywords:algebraic geometry PDF BibTeX XML Cite \textit{A. Emch}, Comment. Math. Helv. 6, 133--143 (1933; Zbl 0007.32305) Full Text: DOI EuDML OpenURL