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1 (* Title : Lubs.thy |
1 (* Title : Lubs.thy |
2 ID : $Id$ |
|
3 Author : Jacques D. Fleuriot |
2 Author : Jacques D. Fleuriot |
4 Copyright : 1998 University of Cambridge |
3 Copyright : 1998 University of Cambridge |
5 *) |
4 *) |
6 |
5 |
7 header{*Definitions of Upper Bounds and Least Upper Bounds*} |
6 header{*Definitions of Upper Bounds and Least Upper Bounds*} |
8 |
7 |
9 theory Lubs |
8 theory Lubs |
10 imports Plain |
9 imports Plain Main |
11 begin |
10 begin |
12 |
11 |
13 text{*Thanks to suggestions by James Margetson*} |
12 text{*Thanks to suggestions by James Margetson*} |
14 |
13 |
15 definition |
14 definition |