Difference between revisions of "A Portal Special Presentation- Geometric Unity: A First Look"
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A Portal Special Presentation- Geometric Unity: A First Look (view source)
Revision as of 15:39, 10 April 2020
, 15:39, 10 April 2020→Choosing All Metrics
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Further for every point in the fibers, we get a metric downstairs on the base space. So if we pull back the cotangent bundle, we get a metric $$g^4_{\mu\nu}$$ on $$\Pi^*$$ of the cotangent bundle of $$X$$. | Further for every point in the fibers, we get a metric downstairs on the base space. So if we pull back the cotangent bundle, we get a metric $$g^4_{\mu\nu}$$ on $$\Pi^*$$ of the cotangent bundle of $$X$$. | ||
We now define the chimeric bundle, right? And the chimeric bundle is this direct sum of the vertical tangent bundle along the fibers with the pullback, which we're going to call the horizontal bundle from the base space. | <p>[01:12:17] We now define the chimeric bundle, right? And the chimeric bundle is this direct sum of the vertical tangent bundle along the fibers with the pullback, which we're going to call the horizontal bundle from the base space. | ||
So the chimeric bundle is going to be the vertical tangent space of 10-dimensions to $$U$$ direct sum the four-dimensional cotangent space, which we're going to call horizontal to $$U$$. And the great thing about the chimeric bundle is that it has an a priori metric. It's got a metric on the four, a metric on the 10, and we can always decide that the two of them are naturally perpendicular to each other. | So the chimeric bundle is going to be the vertical tangent space of 10-dimensions to $$U$$ direct sum the four-dimensional cotangent space, which we're going to call horizontal to $$U$$. And the great thing about the chimeric bundle is that it has an a priori metric. It's got a metric on the four, a metric on the 10, and we can always decide that the two of them are naturally perpendicular to each other. | ||