Partial Latin Square
In a normal 
Latin Square, the entries in each row and column are chosen from a ``global'' set of 
objects. Like a Latin square, a partial Latin square has no two rows or columns which contain the same two symbols.However, in a partial Latin square, each cell is assigned one of its own set of possible ``local'' (and distinct)symbols, chosen from an overall set of more than three distinct symbols, and these symbols may vary from location to location. For example, given the possible symbols 
1, 2, ..., 6
which must be arranged as
the
partial Latin square
can be constructed.See also Dinitz Problem, Latin Square
References
Cipra, B. ``Quite Easily Done.'' In What's Happening in the Mathematical Sciences 2, pp. 41-46, 1994.
- Divergence Theorem
- Divergent Sequence
- Divergent Series
- Diversity Condition
- Divide
- Divided Difference
- Divine Proportion
- Divisibility Tests
- Divisible
- Division
- Division Algebra
- Division Lemma
- Division Ring
- Divisor
- Divisor Function
- Divisor Theory
- Dixon-Ferrar Formula
- Dixon's Factorization Method
- Dixon's Random Squares Factorization Method
- Dixon's Theorem
- D-Number
- Dobinski's Formula
- Dodecadodecahedron
- Dodecagon
- Dodecagram