His proposal that singularities except the Big Bang exist outside an event horizon is the cosmic censorship hypothesis.
A set of conditions developed by this physicist for two matrices determines whether they are pseudoinverses. A notation of which this physicist is the second namesake simplifies Ricci's notation by using two-component spinors and was developed with Ezra Newman. His proposal that singularities except the Big Bang exist outside an event horizon is the cosmic censorship hypothesis. This physicist proved that an initial cosmological singularity exists even in an inhomogeneous universe, which was extended with another mathematician to show that some form of geodesic incompleteness occurs in all black holes. Those results are a set of singularity theorems developed with Stephen Hawking. For 10 points, name this British physicist who also developed a namesake aperiodic tiling.
A set of conditions developed by this physicist for two matrices determines whether they are pseudoinverses.
Roger Penrose