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Date: 29-7-2021
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Date: 8-7-2021
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Date: 2-7-2017
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An abstract manifold is a manifold in the context of an abstract space with no particular embedding, or representation in mind. It is a topological space with an atlas of coordinate charts.
For example, the sphere can be considered a submanifold of
or a quotient space
. But as an abstract manifold, it is just a manifold, which can be covered by two coordinate charts
and
, with the single transition function,
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defined by
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where . It can also be thought of as two disks glued together at their boundary.
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دخلت غرفة فنسيت ماذا تريد من داخلها.. خبير يفسر الحالة
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ثورة طبية.. ابتكار أصغر جهاز لتنظيم ضربات القلب في العالم
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العتبة العباسية المقدسة تستعد لإطلاق الحفل المركزي لتخرج طلبة الجامعات العراقية
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