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Blunt cones can be excluded from the definition of convex cone by substituting "non-negative" for "positive" in the condition of α, β. A cone is called flat if it contains some nonzero vector x and its opposite −x, meaning C contains a linear subspace of dimension at least one, and salient (or strictly convex) otherwise.
According to Vivian Sobchack, a British cinema and media theorist and cultural critic: . Science fiction film is a film genre which emphasizes actual, extrapolative, or 2.0 speculative science and the empirical method, interacting in a social context with the lesser emphasized, but still present, transcendentalism of magic and religion, in an attempt to reconcile man with the unknown.
Cone of a circle. The original space X is in blue, and the collapsed end point v is in green.. In topology, especially algebraic topology, the cone of a topological space is intuitively obtained by stretching X into a cylinder and then collapsing one of its end faces to a point.
"A science fiction story is a story built around human beings, with a human problem, and a human solution, which would not have happened at all without its scientific content." [13] Basil Davenport. 1955. "Science fiction is fiction based upon some imagined development of science, or upon the extrapolation of a tendency in society." [14] Edmund ...
Science fiction (sometimes shortened to sci-fi or abbreviated SF) is a genre of speculative fiction which typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel universes, and extraterrestrial life.
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Spy-fi can be defined as media that centers around the adventures of a protagonist (or protagonists) working as a secret agent or a spy.Usually, these adventures will revolve around defeating a rival superpower or singular enemy from achieving a nefarious aim.
Star Wars sits top with a total gross of $10.3B, while Avatar has the best average of any science fiction series at $2.6B. † Background shading indicates that at least one film in the series is playing in the week commencing 31 January 2025 in theaters around the world .