Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
sav08:galois_connection_on_lattices [2008/05/07 10:18] vkuncak |
sav08:galois_connection_on_lattices [2008/05/07 23:45] giuliano |
||
|---|---|---|---|
| Line 18: | Line 18: | ||
| * $\alpha$ is a [[wk>surjective function]] | * $\alpha$ is a [[wk>surjective function]] | ||
| * $\gamma$ is an [[wk>injective function]] | * $\gamma$ is an [[wk>injective function]] | ||
| + | |||
| ===== Using Galois Connection ===== | ===== Using Galois Connection ===== | ||
| Line 27: | Line 28: | ||
| * $\alpha$ - abstraction function | * $\alpha$ - abstraction function | ||
| * $sp$ - (the usual) strongest postcondition (or just "strongest post"), also called | * $sp$ - (the usual) strongest postcondition (or just "strongest post"), also called | ||
| - | * $sp^{#}$ - abstract post, abstract transformer (transforms one abstract element into another) | + | * $sp^{\#}$ - abstract post, abstract transformer (transforms one abstract element into another) |
| + | |||
| + | Abstraction function for sign analysis. | ||
| Define $sp^\#$ using $\alpha$ and $\gamma$: | Define $sp^\#$ using $\alpha$ and $\gamma$: | ||