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The suspension of X is denoted by SX [1] or susp(X). [2]: 76 There is a variation of the suspension for pointed space, which is called the reduced suspension and denoted by ΣX. The "usual" suspension SX is sometimes called the unreduced suspension, unbased suspension, or free suspension of X, to distinguish it from ΣX.
Suspension is a construction passing from a map to a flow. Namely, let be a metric space, : be a continuous map and : + be a function (roof function or ceiling function) bounded away from 0. Consider the quotient space:
The suspension spectrum of a space , denoted is a spectrum = (the structure maps are the identity.) For example, the suspension spectrum of the 0-sphere is the sphere spectrum discussed above. The homotopy groups of this spectrum are then the stable homotopy groups of X {\displaystyle X} , so
A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance. Some definitions specify that the particles must be dispersed in a liquid, [1] while others extend the definition to include substances like aerosols and gels.
Reid makes a full recovery, admitting he actually slipped while trying to arrest Brewer and hit his head on a sink. Frost's instincts allow him to connect an abandoned truck of medical waste with the disappearance of Helena Gibson and he recovers her remains before they can be incinerated at a specialist warehouse.
First episode of a five-part series on the Galapagos islands. This episode looks at the life and work of Charles Darwin, with emphasis on his historic five-year voyage as resident naturalist aboard the ship Beagle, his stopover at the Galapagos, and his lifetime spent evaluating the results of the trip. [62] [63]
Some of the first suspension structures were bridges. The first iron chain suspension bridge in the Western world was the Jacob's Creek Bridge (1801) in Westmoreland County, Pennsylvania, designed by inventor James Finley. [1] The Golden Gate Bridge in San Francisco, California, is another example of a suspension structure. Much like the ...
Manifest is an American supernatural drama television series created by Jeff Rake that premiered on September 24, 2018, on NBC. It centers on the passengers and crew of a commercial airliner who suddenly reappear after being presumed dead for five and a half years. The series stars Melissa Roxburgh, Josh Dallas, Athena Karkanis, J. R. Ramirez, Luna Blaise, Jack Messina, Parveen Kaur, Matt Long ...