It is a work to be recommended to every serious student of partial differential equations and particularly to those who are fascinated by the manner in which modern functional analysis has aided and influenced their study.
Ito ay isang trabaho na inirerekomenda sa bawat seryosong mag-aaral ng mga bahagi ng kaugalian equation at lalo na sa mga nabighani ng mga paraan kung saan ang modernong functional analysis ay aided at naiimpluwensyahan ng kanilang pag-aaral.