John Bourchier (regicide) John Bourchier (regicide) Sir John Bourchier or Bourcher (c. 1595 – August 1660) was an English parliamentarian, Puritan and one of the regicides of King Charles I. John Bourchier was the son of William Bourchier of Beningbrough and grandson of Sir Ralph Bourchier. He was probably educated at Christ's College, Cambridge, and was admitted to Gray's Inn in 1609/10. He was knighted in 1619. In 1625, Bourchier was appointed as a Justice of the Peace for the three Yorkshire Ridings. When Charles dissolved Parliament and sought to raise money through the forced loans in 1627, Sir John was one of
Conformal Killing equation Conformal Killing equation In conformal geometry, the conformal Killing equation on a manifold of space-dimension "n" with metric formula_1 describes those vector fields formula_2 which preserve formula_1 up to scale, i.e. for some function formula_5 (where formula_6 is the Lie derivative). Vector fields that satisfy the conformal Killing equation are exactly those vector fields whose flow preserves the conformal structure of the manifold. The name Killing refers to Wilhelm Killing, who first investigated the Killing equation for vector fields that preserve a Riemannian metric. By taking the trace we find that necessarily formula_7. Therefore we can write the conformal Killing