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  2. C. T. C. Wall - Wikipedia

    en.wikipedia.org/wiki/C._T._C._Wall

    Charles Terence Clegg "Terry" Wall (born 14 December 1936) is a British mathematician, educated at Marlborough and Trinity College, Cambridge.He is an emeritus professor of the University of Liverpool, where he was first appointed professor in 1965.

  3. Closed timelike curve - Wikipedia

    en.wikipedia.org/wiki/Closed_timelike_curve

    A CTC therefore results in a Cauchy horizon, and a region of spacetime that cannot be predicted from perfect knowledge of some past time. No CTC can be continuously deformed as a CTC to a point (that is, a CTC and a point are not timelike homotopic ), as the manifold would not be causally well behaved at that point.

  4. Quantum mechanics of time travel - Wikipedia

    en.wikipedia.org/wiki/Quantum_mechanics_of_time...

    To analyze the system, Deutsch divided it into two parts: a subsystem outside the CTC and the CTC itself. To describe the combined evolution of both parts over time, he used a unitary operator (U). This approach relies on a specific mathematical framework to describe quantum systems.

  5. Timelike homotopy - Wikipedia

    en.wikipedia.org/wiki/Timelike_homotopy

    On a Lorentzian manifold, certain curves are distinguished as timelike.A timelike homotopy between two timelike curves is a homotopy such that each intermediate curve is timelike.

  6. Ptolemy's theorem - Wikipedia

    en.wikipedia.org/wiki/Ptolemy's_theorem

    Ptolemy's theorem is a relation among these lengths in a cyclic quadrilateral. = + In Euclidean geometry, Ptolemy's theorem is a relation between the four sides and two diagonals of a cyclic quadrilateral (a quadrilateral whose vertices lie on a common circle).

  7. Understanding the current Child Tax Credit for 2023 and what ...

    www.aol.com/understanding-current-child-tax...

    The CTC and ACTC “qualifying child" rules include a variety of relationships (e.g., step-child, grandchild, great-grandchild). There are also phase out rules that apply to the credit.

  8. Connectionist temporal classification - Wikipedia

    en.wikipedia.org/wiki/Connectionist_temporal...

    CTC scores can then be used with the back-propagation algorithm to update the neural network weights. Alternative approaches to a CTC-fitted neural network include a hidden Markov model (HMM). In 2009, a Connectionist Temporal Classification (CTC)-trained LSTM network was the first RNN to win pattern recognition contests when it won several ...

  9. Tudor Grange Academy, Kingshurst - Wikipedia

    en.wikipedia.org/wiki/Tudor_Grange_Academy...

    Tudor Grange Academy, Kingshurst (previously CTC Kingshurst Academy) is a coeducational secondary school and sixth form located in Kingshurst, Solihull, England. It was the only City Technology College to offer post-16 students the opportunity to study the International Baccalaureate instead of A-levels .