:

  •  
                                                          

    () (Brouwer) (1605 1606-1638)

    () (Brouwer) (1605 1606-1638)

    . , (" "), (" ").

    (Alberti) ( . 1902)
    . . .
    (1905-76)
    ( . . 1632)
    (1805-65)
    :