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# branch

Basis Function Combinator

Use a Boolean value to select one of two quoted programs to run.

    branch == roll< choice i

    False [F] [T] branch
    --------------------------
       F

    True [F] [T] branch
    -------------------------
          T

Gentzen diagram.

## Definition

if not basis.

## Derivation

if not basis.

## Source

if basis

## Discussion

## Crosslinks