n1cochain
N1cochain is a term occasionally encountered in mathematical discussions as a variant or specialization of the standard 1-cochain. It is not a widely standardized term in established references, but when used it typically signals either a member of a parametrized family of 1-cochains or a subspace of 1-cochains distinguished by an index denoted n1.
In the usual setting, a 1-cochain on a simplicial (or cell) complex X with coefficient group G
An n1cochain, when it appears in literature, would typically be interpreted as either: (a) an element φ
In summary, n1cochain is not a standard construct on its own but can be understood as a