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A short proof of
Isbell’s zigzag theorem
Peter Michael Higgins |
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Vol. 144 (1990), No. 1, 47–50
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Abstract |
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Isbell’s Zigzag Theorem, which characterizes semigroup dominions (defined below) by means of equations, has several proofs. We give a short proof of the theorem from first principles. |
Mathematical Subject Classification 2000
Primary: 20M50
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Milestones
Received: 17 July 1989
Published: 1 July 1990
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Authors |
| Peter Michael Higgins | |
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