We study almost contact metric structures induced by 2-fold vector cross products on manifolds with $G_2$ structures. We get some results on possible classes of almost contact metric structures. Finally, we give examples.
$G_2$ structure, almost contact metric structure
ÖZDEMİR, NÜLİFER; SOLGUN, MEHMET; and AKTAY, ŞİRİN
"Almost contact metric structures induced by $G_2$ structures,"
Turkish Journal of Mathematics: Vol. 41:
4, Article 23.
Available at: https://journals.tubitak.gov.tr/math/vol41/iss4/23