Aspinwall, PS; Greene, BR; Morrison, DR, *Space-time topology change and stringy geometry a*,
Journal of Mathematical Physics, vol. 35 no. 10
(1994),
pp. 5321-5337 .
**Abstract:**

*Recent work which has significantly honed the geometric understanding and interpretation of the moduli space of certain N=2 superconformal field theories is reviewed. This has resolved some important issues in mirror symmetry and has also established that string theory admits physically smooth processes which can result in a change in topology of the spatial universe. Recent work which illuminates some properties of physically related theories associated with singular spaces such as orbifolds is described. © 1994 American Institute of Physics.*