Symmetry - Ytremmys

A crossword puzzle should be symmetrical. The diagram on the following page certainly is -- even though it looks more like a maze than a crossword puzzle

Leapin\u27 Lizards -- L.O. Annie

Have you ever wondered about the credited quotes in Webster\u27s Third New International Dictionary? Webster\u27s assures us they are contemporary quotations from well-known people and publications. Close examination of the dictionary itself, however, reveals they are a bewildering diversity, not necessarily either contemporary or well-known

Webster\u27s Zones

The inclination of the earth\u27s equatorial plane to the plane of the earth\u27s orbit around the sun, termed the obliquity of the ecliptic by astronomer\u27s, is approximately equal to 23º27\u27 of arc. If this inclination were 0º the sun would remain directly overhead the Equator throughout the year and there would be no seasons. In reality, the directly overhead point of the sun moves north and south with the seasons

Hard-to-Find Words in Web 3 (G-K)

A list of hard-to-find words

Hard-to-Find Words in Web 3 (T-Z)

List of hard to find words

Applications of W-algebras to BF theories, QCD and 4D Gravity

We are able to show that BF theories naturally emerge from the coadjoint orbits of $W_2$ and $w_\infty$ algebras which includes a Kac-Moody sector. Since QCD strings can be identified with a BF theory, we are able to show a relationship between the orbits and monopole-string solutions of QCD. Furthermore, we observe that when 4D gravitation is cast into a BF form through the use of Ashtekar variables, we are able to get order $\hbar$ contributions to gravity which can be associated with the $W_2$ anomaly. We comment on the relationship to gravitational monopoles.Comment: 14 page

High-Fidelity Z-Measurement Error Correction of Optical Qubits

We demonstrate a quantum error correction scheme that protects against accidental measurement, using an encoding where the logical state of a single qubit is encoded into two physical qubits using a non-deterministic photonic CNOT gate. For the single qubit input states |0>, |1>, |0>+|1>, |0>-|1>, |0>+i|1>, and |0>-i|1> our encoder produces the appropriate 2-qubit encoded state with an average fidelity of 0.88(3) and the single qubit decoded states have an average fidelity of 0.93(5) with the original state. We are able to decode the 2-qubit state (up to a bit flip) by performing a measurement on one of the qubits in the logical basis; we find that the 64 1-qubit decoded states arising from 16 real and imaginary single qubit superposition inputs have an average fidelity of 0.96(3).Comment: 4 pages, 4 figures, comments welcom