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authorTuowen Zhao <ztuowen@gmail.com>2016-09-17 03:22:53 +0000
committerTuowen Zhao <ztuowen@gmail.com>2016-09-17 03:22:53 +0000
commit75ff98e4d65862ff5b36b533b4f6e3ea71ede1d5 (patch)
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+# Omega Calculator v1.2 (based on Omega Library 1.2, August, 2000):
+# symbolic n,m;
+#
+# d11 := {[i,j] -> [i,2i+j] : 1 <= i <= n && 1 <= j,2i+j <= m};
+#
+# d12 := {[i,j] -> [i,j+4] : 1 <= i <= n && 1 <= j,j+4 <= m};
+#
+# d := d11 union d12;
+#
+# e := d - (d+ compose d);
+#
+# gist e given d;
+
+{[i,j] -> [i,2i+j] : 1 <= i <= 3, n && 1 <= j && 2i+j <= m} union
+ {[i,j] -> [i,2i+j] : Exists ( alpha : 2alpha = 1+i && 5 <= i <= n && 2i+j <= m && 1 <= j)} union
+ {[i,j] -> [i,j+4] : 2 <= i <= n && 1 <= j <= m-4}
+
+#