Author: Hofmann, Gerald

Hofmann, Gerald: Characterization of the extremal rays of the cones of positive elements in tensor algebras. (English). In: Frolík, Zdeněk (ed.): Proceedings of the 10th Winter School on Abstract Analysis. Circolo Matematico di Palermo, Palermo, 1982. pp. [135]-145
Hofmann, Gerald: On the existence problem in the algebraic approach to quantum field theory. (English). In: Frolík, Z. (ed.): Abstracta. 7th Winter School on Abstract Analysis. Czechoslovak Academy of Sciences, Praha, 1979. pp. 28-32

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