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Abacus in various number systems (599 words) |
 | Abacus is probably the first of calculating devices. |
| Chinese suan pan is different from the European abacus in that the board is split into two parts. |
| The applet represents an abacus close to the Russian variant where, for the ease of use, middle counters differ in color from all the rest. |
| ABACUS - A Branch-And-CUt System (202 words) |
| ABACUS is a software system written in C++ that provides a framework for the implementation of branch-and-bound algorithms using linear programming relaxations. |
| ABACUS allows the software developer to concentrate merely on the problem specific parts, i.e., the separation of cutting planes, column generation, and primal heuristics. |
| ABACUS supports the Open Solver Interface (Osi) developed by the COIN-OR (COmputational INfrastructure for Operations Research) project which means that every solver supported by OSI can be used to solve the relaxations. |
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