plane at infinity中文
- plane: n. 平刨；鏝。 a jack pl ...
- infinity: n. 1.＝infinitude. ...
- at infinity: 無盡的; 在無窮遠處
In projective geometry, the plane at infinity is a projective plane which is added to the affine 3-space in order to give it closure of incidence properties. The result of the addition is the projective 3-space, P^3.