Masterton is the antipode of Segovia, Spain. The Hopf algebra adds an antipode to the bialgebra axioms. Segovia is the Antipode of Masterton, New Zealand. Furthermore, China does not contain the antipode of any landmass in North America. Located at the antipode of Mare Orientale is Mare Marginis. The city is almost the exact antipode of Wuhu in China. Dekar is an antipode to Wahiawa, Hawaii. Let "P" be any point on the sphere other than the antipode of "S". The group-like elements form a group with inverse given by the antipode. At its antipode lies the "trailing pole". Guarda is antipode of Puponga in New Zealand. It is located at the antipode of Argyre Planitia, centered at . She is former Editor at "Antipode&colon; A Radical Journal of Geography". An extract was published in "Antipode" in 2000. Tematagi is the closest land area to the antipode of Mecca.