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In mathematics, cylinder set measure (or promeasure, or premeasure, or quasi-measure, or CSM) is a kind of prototype for a measure on an infinite-dimensional vector space. An example is the Gaussian cylinder set measure on Hilbert space .
A Tipler cylinder, also called a Tipler time machine, is a hypothetical object theorized to be a potential mode of time travel—although results have shown that a Tipler cylinder could only allow time travel if its length were infinite or with the existence of negative energy.
Cylinder sets are often used to define a measure, using the Kolmogorov extension theorem; for example, the measure of a cylinder set of length m might be given by 1/m or by 1/2 m. Cylinder sets may be used to define a metric on the space: for example, one says that two strings are ε-close if a fraction 1−ε of the letters in the strings match.
Indeed, as we would expect, the required acceleration diverges as these timelike circles approach the null circles lying in the critical cylinder =. Closed timelike curves turn out to exist in many other exact solutions in general relativity, and their common appearance is one of the most troubling theoretical objections to this theory.
A two-dimensional representation of the Klein bottle immersed in three-dimensional space. In mathematics, the Klein bottle (/ ˈ k l aɪ n /) is an example of a non-orientable surface; that is, informally, a one-sided surface which, if traveled upon, could be followed back to the point of origin while flipping the traveler upside down.
The video features Otis, a 4-year-old Labrador from Leeds, England, displaying his discontent in a manner strikingly similar to a human toddler’s tantrum. As the clip begins, Otis comfortably ...
Green theory is a theory of international relations (IR). In contrast to mainstream theories of IR, it posits environmental issues as central to the study of international relations. According to green theory, mainstream theories like neorealism and neoliberalism fail to understand environmental problems through their rationalist and state ...
1 serving Cucumber-Chicken Green Goddess Wrap. 1 medium orange. P.M. Snack (122 calories) 1 serving White Bean–Stuffed Mini Bell Peppers. Dinner (572 calories) 1 serving Salmon Power Bowl.