At the July 1951 conference: Jean-Pierre

Serre and Jean Dieudonne (standing);

Jacques Dixmier, Laurent Schwartz, and

Jean Delsarte (seated).

whic h deal t wit h the expansio n of function s int o

powe r series—h e wa s a virtuos o whe n it cam e to

calculation—a s wel l as numbe r theor y an d som e

problem s in mathematica l physics . In lat e 1942 ,

Delsart e forme d a grou p to discus s the refor m

of scientifi c researc h in France . Afte r the war , he

als o participate d in th e Langevin-Wallo n

committe e for teachin g reform , fro m whic h he

returne d rathe r disguste d becaus e he didn' t

thin k it addresse d an y rea l issues . Startin g in

1947 , Delsart e accepte d variou s invitation s to

spen d tim e a t universitie s abroad ; amon g

others , he visite d the Institut e fo r Advance d

Stud y in Princeton , the Universit y of Sa o Paulo ,

Mexico , an d Bombay . Meanwhile , he als o mad e

Nanc y into a renowne d cente r o f mathematics ,

with brillian t mind s like Dieudonne , Lauren t

Schwartz , an d Roge r Godement . However , this

succes s wa s onl y temporary , as the attractio n o f

Pari s eventuall y dre w student s an d scientist s to

the capital . He lef t in 196 2 to direc t the France -

Japa n Hous e in Toky o an d returne d to Nanc y in

1965 . Hi s fragil e healt h (he suffere d fro m

ophthalmologica l problem s an d sever e

diabetes ) soo n starte d to tak e its toll . The n

cam e the Frenc h studen t uprising s o f Ma y 1 968 ,

"whic h he didn' t withstand, " Wei l writes .

Delsart e wa s a notable , he wa s "dea n Delsarte "

an d wa s use d to deference . "Delsart e couldn' t

understan d tha t the chao s wa s necessar y to

creat e (perhaps ) a ne w societ y an d consequentl y

a ne w universit y system. " Di d this weake n him

eve n more ? Jea n Delsart e die d o f a hear t attac k

on Novembe r 28 , 1968 .