vei _{VEI

…VEhO} cmavo

left mathematical bracket.

On grammatical class:

krama'o: x₁ (text) is a grammatical article, starter, left bracket, nominalizer of word class x₂
boi'e'u (exp!): mekso operator/function terminator (in Polish notation): inserts exactly enough "{boi}"'s consecutively so as to terminate the most recently uttered operator/function in a mekso expression
ca'oi (exp!): binary operator: complex number from argument and phase, (r, \phi) \mapsto r e^{i \phi}
fe'ei (exp!): binary mekso operator: divided by (fraction): a/(b...)
kei'au: mekso operator: finite result set derived from/on set A with/due to operator/function B under ordering of application C
mu'i'u (exp!): base-dependent digit: representing exactly one half of one more than the maximum possible single-digit number expressible in the relevant number base
su'ei (exp!): shows that the first two places have a reciprocal relation
ve'oi (exp!): Close all open mathematical brackets.
vu'ai (exp!): base-dependent digit: the maximum possible single-digit number expressible in the relevant number base.
slurume: x₁ is a part of Lojban text representing rule 'free' according to the first edition of the book 'The Complete Lojban Language'.
terkanu: x₁ is a part of Lojban text representing rule 'quantifier' according to the first edition of the book 'The Complete Lojban Language'.