Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Next revision Both sides next revision | ||
|
sav08:definition_of_set_constraints [2008/05/22 11:50] vkuncak |
sav08:definition_of_set_constraints [2008/05/22 11:51] vkuncak |
||
|---|---|---|---|
| Line 111: | Line 111: | ||
| f^{-2}(f(S,T)) = | f^{-2}(f(S,T)) = | ||
| \] | \] | ||
| - | ++++| | + | ++| |
| \[ | \[ | ||
| = f^{-2}(\{ f(s,t) \mid s \in S, t \in T \}) | = f^{-2}(\{ f(s,t) \mid s \in S, t \in T \}) | ||
| \] | \] | ||
| - | ++++ | + | ++ |
| - | + | ++| | |
| - | ++++| | + | |
| \[ | \[ | ||
| = \{ s_1 \in S \mid \exists t_1 \in T \} | = \{ s_1 \in S \mid \exists t_1 \in T \} | ||
| \] | \] | ||
| - | ++++ | + | ++ |
| - | + | ++| | |
| - | ++++| | + | |
| \[ | \[ | ||
| = \left\{ \begin{array}{rl} | = \left\{ \begin{array}{rl} | ||
| Line 131: | Line 129: | ||
| \right. | \right. | ||
| \] | \] | ||
| - | ++++ | + | ++ |
| An important property we would like to have in this semantic is a very intuitive one : \[ [[f^{-1}(f(S_1, S_2))]] = [[S_1]] \] | An important property we would like to have in this semantic is a very intuitive one : \[ [[f^{-1}(f(S_1, S_2))]] = [[S_1]] \] | ||