<prompt> Yakha inguqulo eyinkimbinkimbi yalesi sigwebo Ngokusemthethweni, i-bra iyisithunywa se-ket.  <response>: Yiqiniso, inguqulo eyinkimbinkimbi yomusho ithi Ngokobuchwepheshe, i-bra iyinto yesikhala esiphindwe kabili, futhi ihlobene ne-ket yi-Riesz representation theorem. 