(include"common-gambit.sc") (define(run) (let*((start (list 1.0 1.0)) (f (lambda(x1 y1 x2 y2) (d- (d+ (sqr x1) (sqr y1)) (d+ (sqr x2) (sqr y2))))) (x1*-y1* (multivariate-argmin-F (lambda(x1-y1) (multivariate-max-F (lambda(x2-y2) (f (car x1-y1) (car (cdr x1-y1)) (car x2-y2) (car (cdr x2-y2)))) start)) start)) (x1* (car x1*-y1*)) (y1* (car (cdr x1*-y1*))) (x2*-y2* (multivariate-argmax-F (lambda(x2-y2) (f x1* y1* (car x2-y2) (car (cdr x2-y2)))) start)) (x2* (car x2*-y2*)) (y2* (car (cdr x2*-y2*)))) (list (list (write-real x1*) (write-real y1*)) (list (write-real x2*) (write-real y2*))))) (run)

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