Differences
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| Both sides previous revision Previous revision | Next revision Both sides next revision | ||
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sav07_lecture_3_skeleton [2007/03/20 14:42] vkuncak |
sav07_lecture_3_skeleton [2007/03/20 14:42] vkuncak |
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| CR(c)=R(c) (base case) | CR(c)=R(c) (base case) | ||
| + | |||
| ==== Accumulation of equalities ==== | ==== Accumulation of equalities ==== | ||
| Line 67: | Line 68: | ||
| R(y=x+2) = (y=x_0 + 2 & x=x_0) | R(y=x+2) = (y=x_0 + 2 & x=x_0) | ||
| - | CR(x=3;y=x+2) = x_1=3 & y_1 = y_0 & y = x_1 + 2 & x = x_1 | + | CR(x=3;y=x+2) = x_1=3 & y_1 = y_0 & y = x_1 + 2 & x = x_1 |
| But if a variable is equal to another, it can be substituted using the substitution rules | But if a variable is equal to another, it can be substituted using the substitution rules | ||