mekso ternary operator: inverse function of input function X1 with respect to its input X2, taken on branch or restricted domain X3 ("domain" being of X1).
x1 is the vector flux (flow) of quantity/substance (count) x2 through (geometric/imaginary) hypersurface/embedded manifold x3 per unit hyperarea per unit time.
x1 is the captain/commander/leader/boss/superior of/to the captain/commander/leader/boss/superior of/to the captain/commander/leader/boss/superior of/to the ... captain/commander/leader/boss/superior of/to x2 (subject, entity, vehicle, domain), connected by intermediate steps x3.
x1 (abstraction) is/should be a legal/moral right/entitlement/guarantee, normative principle, protection, privilege, power, trait, treatment, duty/obligation, opportunity, freedom, dignity/point of respect, ability, point of equality, natural guarantee, natural ability, inherent property of x2 according to judge/norm/standard x3.
x1 is the formatted address for something - (with format) starting with x2, which is an address/locality/administrative subunit/region which belongs to slightly broader address/locality/administrative subunit/region x3, which in turn itself belongs to a slightly broader address/locality/administrative subunit/region x4, \dots (etc.).
x1 is the geodesic path from x2 to x3 via or through points including/on connected manifold component/in connected graph component x4, with distance being measured by standard/metric/weighting x5.
x1 is the similarity relation between all members of set x2 (set of quoted words) such that they all mean esentially one common thing x3 and are considered to be identical in any meaningful way in language x4.