e: Levi-Civita epsilon

In ricci: Ricci Calculus

Levi-Civita epsilon

Description

Provides a labeled Levi-Civita epsilon (pseudo) tensor. The indices are required to be lowered. Otherwise an error is thrown.

Usage

e(...)

Arguments

...	Index labels separated by commas optionally prefixed by "+" and "-" to indicate the index position (upper and lower respectively). If no prefix is provided, a lower index ("-") is assumed. This argument uses non-standard evaluation: any R symbol that is not a reserved keyword can be used.

Value

A labeled tensor object. The underlying data will differs depending on the number of labels provided.

See Also

Underlying implementation: calculus::epsilon()

Wikipedia: Levi-Civita symbol

Other tensor symbols: d()

Examples

e(i, j)

e(i, j, k)

ricci documentation built on Sept. 9, 2025, 5:56 p.m.