Best source for covariant (and contravriant) tensors is Bishop and Goldberg "Tensor Analysis on Manifolds".
--- Frank C. Wimberly 140 Calle Ojo Feliz, Santa Fe, NM 87505 505 670-9918 Santa Fe, NM On Mon, Jun 16, 2025, 4:41 PM Frank Wimberly <wimber...@gmail.com> wrote: > I had to look up covariant tensor. Five years ago I knew exactly what it > was. > > --- > Frank C. Wimberly > 140 Calle Ojo Feliz, > Santa Fe, NM 87505 > > 505 670-9918 > Santa Fe, NM > > On Mon, Jun 16, 2025, 4:21 PM Frank Wimberly <wimber...@gmail.com> wrote: > >> Sheesh. Are you guys talking about a conversation from 5 years ago? >> >> --- >> Frank C. Wimberly >> 140 Calle Ojo Feliz, >> Santa Fe, NM 87505 >> >> 505 670-9918 >> Santa Fe, NM >> >> On Mon, Jun 16, 2025, 4:10 PM Frank Wimberly <wimber...@gmail.com> wrote: >> >>> >>> Frank, >>> Would you say that the mind is as public as RSA. encryption? >>> >>> I'm not sure I understand your question. But. no. >>> >>> >>> --- >>> Frank C. Wimberly >>> 140 Calle Ojo Feliz, >>> Santa Fe, NM 87505 >>> >>> 505 670-9918 >>> Santa Fe, NM >>> >>> On Tue, May 12, 2020, 10:58 AM Jon Zingale <jonzing...@gmail.com> wrote: >>> >>>> Glen, Eric, >>>> >>>> I am enjoying how the conversation is developing. The celery >>>> example strikes me as being important, but where Glen refers >>>> to *scale* I would speak of *domain of definition*. That a shift in >>>> domain happens to be size, rather than some other contextual >>>> specification, may not be what we want. If this isn't the case >>>> Glen, please let me know. With respect to Eric's points it seems >>>> fair to me to say that a paddle wheel is behaving, but perhaps not >>>> in the *larger* context of the river. The celery is behaving, but not >>>> not in the *smaller* context of capillary action. Here I am using >>>> the language of *large* and *small*, but perhaps other modalities >>>> have a place as well. One can say Nick's behavior appears >>>> spontaneously, but in fact was necessitated by something *prior*. >>>> Here an *earlier* Nick could play the role of the river. >>>> >>>> Frank, >>>> Would you say that the mind is as public as RSA encryption? >>>> .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- >>>> ... .... . ... >>>> FRIAM Applied Complexity Group listserv >>>> Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam >>>> unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com >>>> archives: http://friam.471366.n2.nabble.com/ >>>> FRIAM-COMIC http://friam-comic.blogspot.com/ >>>> >>>
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