Dan Freed

  1. Title:
    Relative field theories

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  2. Title:
    Bordism, Unitarity and Topological Phases of Matter

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  3. Title:
    Orientifold worldsheet anomalies

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  4. Title:
    Chern-Weil Forms and Abstract Homotopy Theory

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  5. Title:
    Wigner’s Gruppenpest, Twisted K-theory, and Gapped Topological Insulators

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  6. Title:
    Lecture #3 of Minicourse, “Some Uses of Differential Cohomology and Twisted K-Theory in Quantum Field Theory and String Theory"

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  7. Title:
    Lecture #2 of Minicourse, “Some Uses of Differential Cohomology and Twisted K-Theory in Quantum Field Theory and String Theory”

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  8. Title:
    Lecture #1 of Minicourse, “Some Uses of Differential Cohomology and Twisted K-Theory in Quantum Field Theory and String Theory”

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  9. Title:
    Introduction to supersymmetry

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  10. Title:
    Remarks on Chern-Simons theory

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  11. Title:
    Online Seminar: Boundaries and 3-dimensional topological field theories

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  12. Title:
    Discussion: What is QFT?

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