  This is an introductory set of lecture notes on quantum cosmology, given in
1995 to an audience with interests ranging from astronomy to particle physics.
Topics covered: 1. Introduction: 1.1 Quantum cosmology and quantum gravity; 1.2
A brief history of quantum cosmology. 2. Hamiltonian formulation of general
relativity: 2.1 The 3+1 decomposition; 2.2 The action. 3. Quantisation: 3.1
Superspace; 3.2 Canonical quantisation; 3.3 Path integral quantisation; 3.4
Minisuperspace; 3.5 The WKB approximation; 3.6 Probability measures; 3.7
Minisuperspace for the Friedmann universe with massive scalar field. 4.
Boundary Conditions: 4.1 The no-boundary proposal; 4.2 The tunneling proposal.
5. The predictions of quantum cosmology: 5.1 The period of inflation; 5.2 The
origin of density perturbations; 5.3 The arrow of time.
