Matches Have To Be Checked for Global Consistency. Matching Is Harder if Mismatches Are Allowed. Keeping Track of Mismatches Improves Efficiency. To Be Weighed against the Cost of Searching. Multiple Matching Attempts Lead to Recognition.
Edges Provide More Constraint than Points.
Converting Notations, Manipulating Matrices, and Finding Roots. It Is Easy to Translate Infix Notation to Prefix. Sparse Matrices Can Be Represented as Lists of Lists. Complex Numbers Constitute Another Numeric Data Type. Roots of Quadratic Equations Are Easy To Calculate.