# Enum SOSType

The SOS type

**Namespace**: OPTANO.Modeling.Optimization.Enums

**Assembly**: Optimization.dll

##### Syntax

```
[DataContract]
public enum SOSType : byte
```

### Fields

Name | Description |
---|---|

S1 | A SOS1 is a set of variables in which |

S2 | A SOS2 is a set of variables in which |

S3 | The set of variables appearing in an equation with only binary variables and +1 or -1 coefficients, and a right-hand-side value of 1 - (number of '-1 coefficients'). This is a special case of SOS1. |