... 化成一個一元二次方程式 Ax 2 + By + C = 0 ,根據判別式 D = B 2 − 4 AC ,則得到 1. 當 D > 0 時, L 與 交於相異兩點。 Γ 2. 當 D = 0 時, L 與 相切於一點(此時 Γ L 為切線)。 3. 當 D < 0 時, L 與 Γ 沒有交點。 ...
... v inv v −→ Q/Z, where the first row is also induced from the cup product, the Weil pairing and the inclusion {±1} ,→ ¯ K ∗ , while both down-arrows are localization map to the direct sum over all places. That the last ...