G2 manifold

expositions

• Selman Akbulut, Mustafa Kalafat, Algebraic topology of $G_2$ manifolds, arXiv:1308.2263 [math.DG], August 10 2013, http://arxiv.org/abs/1308.2263, 10.1016/j.exmath.2015.03.004, http://dx.doi.org/10.1016/j.exmath.2015.03.004, Expo. Math. 34 (2016) 106-129
• Karigiannis, Spiro. "What is a G2-manifold?." Notices of the AMS 58.4 (2008). http://www.ams.org/notices/201104/rtx110400580p.pdf
• Olson Manifolds with G2 Holonomy, 2003

articles

• Bagaglini, Leonardo. “Invariant Cocalibrated $G_2$-Structures on Nilmanifolds.” arXiv:1509.01971 [math], September 7, 2015. http://arxiv.org/abs/1509.01971.
• Becker, Katrin, Melanie Becker, and Daniel Robbins. ‘M-Theory and G_2 Manifolds’. arXiv:1507.01619 [hep-Th], 6 July 2015. http://arxiv.org/abs/1507.01619.
• Crowley, Diarmuid, Sebastian Goette, and Johannes Nordström. ‘An Analytic Invariant of G_2 Manifolds’. arXiv:1505.02734 [math], 11 May 2015. http://arxiv.org/abs/1505.02734.
• Crowley, Diarmuid, and Johannes Nordström. ‘Exotic G_2-Manifolds’. arXiv:1411.0656 [math], 3 November 2014. http://arxiv.org/abs/1411.0656.