Dehn plane  In geometry, Dehn introduced two examples of planes, a semi-Euclidean geometry and a non-Legendrian geometry, that have infinitely many lines parallel to a given one that pass through a given point, but where the sum of the angles of a triangle is at least π. A similar phenomenon occurs in hyperbolic geometry, except that the sum of the angles of a triangle is less than π. Dehn's examples use a non-Archimedean field, so that the Archimedean axiom is violated. They were introduced by and discussed by . To construct his geometries, Dehn used a non-Archimedean ordered Pythagorean field Ω("t"), a Pythagorean closure of the field of rational functions R("t"), consisting of the smallest field of real-valued functions on the real line containing the real constants, the identity function "t" (taking any real number to itself) and closed under the operation ω → . The field Ω("t") is ordered by putting "x">"y" if the function "x" is larger than "y" for sufficiently large reals. An element "x" of Ω("t") is called finite if "m"  Lisa Boscola  Lisa M. Boscola (born April 6, 1962) is an American politician from Pennsylvania currently serving as a Democratic member of the Pennsylvania State Senate, representing the 18th Senate District which includes portions of Lehigh and Northampton. Boscola was born in Bethlehem, Pennsylvania to Richard and Anna Stofko. She is a graduate of Bethlehem's Freedom High School and Villanova University, from which she holds both a bachelor's degree and a master's degree in political science. After college, she worked briefly as a court clerk before entering politics. From 1987 to 1993, Boscola was a Northampton County deputy court administrator. She first won a seat in the Pennsylvania House of Representatives in 1994 and served two terms. In 1998, she won a seat in the state senate and was re-elected in 2002, 2006, 2010, 2014 and 2018. In 2020, the Pennsylvania Senate passed a bill sponsored by Boscola that would mandate the reporting of infants born with opioid addiction. According to "Health Crisis Alert", "The bill would require a report to the state Department of Health that would be used to determine whether the opioid crisis is worsening, where resources are needed and what kind of resources are needed."