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Every non-trivial knot has bridge number at least two, [1] so the knots that minimize the bridge number (other than the unknot) are the 2-bridge knots. It can be shown that every n-bridge knot can be decomposed into two trivial n-tangles and hence 2-bridge knots are rational knots. If K is the connected sum of K 1 and K 2, then the bridge ...
Wooden-trussed bridge Sylvan Road Bridge: 1915 1978-06-23 Glencoe: Cook: Frank Lloyd Wright's only bridge Tartar's Ferry Bridge: ca. 1880: 1980-10-29 Smithfield: Fulton: Parker Third Street Bridge (Delavan, Illinois) 1907 1999-05-20 Delavan
Other names for 2-bridge knots are rational knots, 4-plats, and Viergeflechte (German for 'four braids'). 2-bridge links are defined similarly as above, but each component will have one min and max. 2-bridge knots were classified by Horst Schubert, using the fact that the 2-sheeted branched cover of the 3-sphere over the knot is a lens space.
The Hazen Bridge, also known as the Newcomb Bridge, is a steel bridge spanning the Sangamon River north of Mahomet in Champaign County, Illinois, in the United States.It was constructed at a location known as White's ford, a popular crossing location of that era because of its proximity to Mahomet and Shiloh Church.
The one-lane bridge carries Robert Parker Coffin Road over Buffalo Creek in Long Grove, a village located 30 miles (48 km) northwest of Chicago, Illinois. [2]: 4 It connects the Long Grove Community Church to the southwest with downtown Long Grove, formed at the road's intersection with Old McHenry Road, to the northeast.
The Valley City Eagle Bridges is a set of bridges that carry Interstate 72 and U.S. Route 36 across the Illinois River. The bridge is located near Valley City, Illinois , the smallest municipality in the state.
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Pages in category "Bridges in Fulton County, Illinois" The following 10 pages are in this category, out of 10 total. This list may not reflect recent changes. B.