rel nac mei lujvo

x₁ is a 2-dimensional vector with coordinates x₂ and x₃.

See also nacmei, cibnacmei

jbovlaste

In notes:

cibnacmei: x₁ is a 3-dimensional vector with coordinates x₂, x₃ and x₄.
nacmei: x₁ is a vector of dimension x₂ with coordinates x₃, x₄, x₅, ...