(autoload 'auto-capitalize-mode "auto-capitalize"
   "Toggle auto-capitalize minor mode in this buffer." t)
(autoload 'turn-on-auto-capitalize-mode "auto-capitalize"
   "Turn on auto-capitalize minor mode in this buffer." t)

(add-hook 'LaTeX-mode-hook 'turn-on-auto-capitalize-mode)

;; auto-capitalize and LaTeX
 (add-hook 'LaTeX-mode-hook 'my-set-auto-capitalize) 
 (defun my-set-auto-capitalize ()
 (interactive)
         (set (make-local-variable 'auto-capitalize-predicate)
              (lambda () (not (texmathp)))))