1 \ifx\havemjohurwitz\undefined
5 \newcommand*
{\quaternions}{\mathbb{H
}}
7 \ifdefined\newglossaryentry
8 \newglossaryentry{quaternions
}{
9 name=
{\ensuremath{\quaternions}},
10 description=
{the algebra of quaternions
},
16 \newcommand*
{\octonions}{\mathbb{O
}}
18 \ifdefined\newglossaryentry
19 \newglossaryentry{octonions
}{
20 name=
{\ensuremath{\octonions}},
21 description=
{the algebra of octonions
},