Page:Carroll - Game of Logic.djvu/91

15. 0
    	0	0
    0

    0

    Let "persons" be Universe; $m$ = "patient"; $x$ = "children"; $y$ = "that can sit still".

    No $x$ are $m$; No $m^{\prime }$ are $y$.

    $\scriptstyle {\left.{\begin{matrix}\ \\\ \end{matrix}}\right\}\,}$

    ∴ No $x$ are $y$.

    i.e. No children can sit still.

16. 0			0
    	0	1
    	0

    0	1

    Let "things" be Universe; $m$ = "fat": $x$ = "pigs"; $y$ = "skeletons".

    All $x$ are $m$; No $y$ are $m$.

    $\scriptstyle {\left.{\begin{matrix}\ \\\ \end{matrix}}\right\}\,}$

    ∴ All $x$ are $y^{\prime }$.

    i.e. All pigs are not-skeletons.

[See pp. 52, 3]