🏗 A pragmatic guide to manifold wrangling, whatever your formalism.

Key words: Clifford algebra, differential forms… Bollu’s Handy list of differential geometry definitions.

See information geometry.

🏗

## Differential forms formalism

- Flanders, Differential forms (Flanders 1989) is a wildly popular classic available for cheap used
- Frankel, the geometry of physics (Frankel 2011) attempts to update Flanders, trading slightly improved pedagogy for slightly more physics focus.
- Bachman’s book (Bachman 2003) seems popular and is free.
- John Baez’s high speed introduction

## Clifford Algebra formalism

Hestenes’ school.

- Cavendish laboratory’s introduction
- Hestene’s most famous bit of rhetoric
- Hestene’s most infamous bit of rhetoric
- stack exchange arguments.

Handy texts:

Alan Bromborsky, An introduction to Geometric Algebra and Calculus

Alan Macdonald, Geometric Algebra:

Geometric algebra and its extension to geometric calculus unify, simplify, and generalize vast areas of mathematics that involve geometric ideas, including linear algebra, multivariable calculus, real analysis, complex analysis, and euclidean, noneuclidean, and projective geometry. They provide a unified mathematical language for physics (classical and quantum mechanics, electrodynamics, relativity), the geometrical aspects of computer science (e.g., graphics, robotics, computer vision), and engineering.

Amari, Shunʼichi. 2001. “Information Geometry on Hierarchy of Probability Distributions.” *IEEE Transactions on Information Theory* 47: 1701–11. https://doi.org/10.1109/18.930911.

Bachman, David. 2003. *A Geometric Approach to Differential Forms*. http://arxiv.org/abs/math/0306194.

Bowen, Ray M., and C. C. Wang. 1976. *Introduction to Vectors and Tensors, Vol 1: Linear and Multilinear Algebra*. Plenum Press. http://oaktrust.library.tamu.edu/handle/1969.1/2502.

Bowen, Ray M., and C.-C. Wang. 2006. *Introduction to Vectors and Tensors, Vol 2: Vector and Tensor Analysis*. http://oaktrust.library.tamu.edu/handle/1969.1/3609.

Brody, Dorje, and Nicolas Rivier. 1995. “Geometrical Aspects of Statistical Mechanics.” *Phys. Rev. E* 51 (2): 1006–11. https://doi.org/10.1103/PhysRevE.51.1006.

Chisolm, Eric. 2012. “Geometric Algebra,” May. http://arxiv.org/abs/1205.5935.

Doran, Chris, and A. N. Lasenby. 2003. *Geometric Algebra for Physicists*. Cambridge ; New York: Cambridge University Press.

Dorst, Leo, Daniel Fontijne, and Stephen Mann. 2010. *Geometric Algebra for Computer Science: An Object-Oriented Approach to Geometry*. Morgan Kaufmann. http://books.google.com?id=Sg_uR57ZktoC.

Flanders, Harley. 1989. *Differential Forms with Applications to the Physical Sciences*. Dover Publications.

Frankel, Theodore. 2011. *The Geometry of Physics: An Introduction*. 3 edition. Cambridge ; New York: Cambridge University Press.

Hestenes, David. 1988. “Universal Geometric Algebra.” https://www.researchgate.net/profile/David_Hestenes/publication/265424668_UNIVERSAL_GEOMETRIC_ALGEBRA/links/551ec6f00cf29dcabb0836e0.pdf.

———. 1991. “The Design of Linear Algebra and Geometry.” *Acta Applicandae Mathematica* 23 (1): 65–93. https://doi.org/10.1007/BF00046920.

———. 2003. “Spacetime Physics with Geometric Algebra.” *American Journal of Physics* 71 (7): 691–714. https://doi.org/10.1119/1.1571836.

Hestenes, David, and Garret Sobczyk. 1984. *Clifford Algebra to Geometric Calculus a Unified Language for Mathematics and Physics*. Dordrecht: Springer Netherlands.

Hestenes, Prof David. 2001. “Old Wine in New Bottles: A New Algebraic Framework for Computational Geometry.” In *Geometric Algebra with Applications in Science and Engineering*, edited by Dr Eduardo Bayro Corrochano and Prof Garret Sobczyk, 3–17. Birkhäuser Boston. https://doi.org/10.1007/978-1-4612-0159-5_1.

Lasenby, Joan, Anthony N. Lasenby, and Chris J. L. Doran. 2000. “A Unified Mathematical Language for Physics and Engineering in the 21st Century.” *Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences* 358 (1765): 21–39. https://doi.org/10.1098/rsta.2000.0517.

Lauritzen, S L. 1987. “Statistical Manifolds.” In *Differential Geometry in Statistical Inference*, 164. JSTOR.

Leibon, Gregory, Scott Pauls, Dan Rockmore, and Robert Savell. 2010. “Statistical Learning for Complex Systems an Example-Driven Introduction.”

Macdonald, Alan. 2016. “A Survey of Geometric Algebra and Geometric Calculus.” *Advances in Applied Clifford Algebras*, April, 1–39. https://doi.org/10.1007/s00006-016-0665-y.

Moore, Cristopher. 1993. “Braids in Classical Dynamics.” *Physical Review Letters* 70 (24): 3675–9.

Nielsen, Frank. 2018. “An Elementary Introduction to Information Geometry,” August. http://arxiv.org/abs/1808.08271.

Porteous, Ian R. 1995. *Clifford Algebras and the Classical Groups*. Cambridge Studies in Advanced Mathematics 50. Cambridge ; New York: Cambridge University Press.

Warnick, Karl F., Richard H. Selfridge, and David V. Arnold. 1995. “Electromagnetic Boundary Conditions and Differential Forms.” *IEE Proceedings-Microwaves, Antennas and Propagation* 142 (4): 326–32. https://doi.org/10.1049/ip-map:19952003.

———. 1996. “Electromagnetics Made Easy: Differential Forms as a Teaching Tool.” In *2013 IEEE Frontiers in Education Conference (FIE)*, 3:1508–12. IEEE. https://em.groups.et.byu.net/pdfs/publications/fie.pdf.

Warnick, Karl F., Richard H. Selfridge, and D. V. Arnold. 1997. “Teaching Electromagnetic Field Theory Using Differential Forms.” *IEEE Transactions on Education* 40 (1): 53–68. https://doi.org/10.1109/13.554670.

Warnick, K. F., and D. V. Arnold. 1996. “Electromagnetic Green Functions Using Differential Forms.” *Journal of Electromagnetic Waves and Applications* 10 (3): 427–38. https://doi.org/10.1163/156939396X00504.

Warnick, K. F., D. V. Arnold, and R. H. Selfridge. 1996. “Differential Forms in Electromagnetic Field Theory.” In *Antennas and Propagation Society International Symposium, 1996. AP-S. Digest*, 2:1474–7 vol.2. https://doi.org/10.1109/APS.1996.549876.