Can I get an answer to this problem?

Question

Solve for gi

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g = {xa : (a = x) ⊻ (a = y)} = {1,2}

g ∈ ℕ

x ≠ y

gi = {xb : (b ∈ x) ∧ (b ∈ y) but (b ∈ x) > (b ∈ y)} =

Answer 1

That looks confusing.

:S.

What topic is it?