Thun/docs/reference/LESS-THAN-SIGN•LESS-THAN-SIGN•LEFT-CURLY-BRACKET•RIGHT-CURLY-BRACKET.md

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## \<\<{}

Basis Function Combinator

\[\] rollup

Gentzen diagram.

### Definition

if not basis.

### Derivation

if not basis.

### Source

if basis

### Discussion

Lorem ipsum.

### Crosslinks

Lorem ipsum.