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The homotopy type of a simply connected compact 4-manifold only depends on the intersection form on the middle dimensional homology. A famous theorem of Michael Freedman () implies that the homeomorphism type of the manifold only depends on this intersection form, and on a / invariant called the Kirby–Siebenmann invariant, and moreover that every combination of unimodular form and Kirby ...
4-Nitroaniline, p-nitroaniline or 1-amino-4-nitrobenzene is an organic compound with the formula C 6 H 6 N 2 O 2. A yellow solid, it is one of three isomers of nitroaniline. It is an intermediate in the production of dyes, antioxidants, pharmaceuticals, gasoline, gum inhibitors, poultry medicines, and as a corrosion inhibitor. [3]
Separately, the LSEG/Ipsos Primary Consumer Sentiment Index dropped 3.2 points to 54.4 in January, after hitting a more than three-year high in December.
The Symphony No. 4 in B ♭ major, Op. 60, is the fourth-published symphony by Ludwig van Beethoven. It was composed in 1806 and premiered in March 1807 at a private concert in Vienna at the town house of Prince Lobkowitz. The first public performance was at the Burgtheater in Vienna in April 1808. The symphony is in four movements.
The iPad (4th generation) [15] (marketed as iPad with Retina display, [16] colloquially referred to as the iPad 4) [17] [18] is a tablet computer developed and marketed by Apple Inc. Compared to its predecessor, the third-generation iPad, the fourth-generation iPad maintained the Retina Display but featured new and upgraded components such as the Apple A6X chip and the Lightning connector ...
On 4 February 2017, a US airstrike killed former al-Qaeda commander Abu Hani al-Masri, who was a part of Ahrar al-Sham at the time of his death. It was reported that he was about to defect to Tahrir al-Sham before his death. [ 95 ]
Colin James Farrell (/ ˈ f æ r əl /; born 31 May 1976 [1]) is an Irish actor.A leading man in blockbusters and independent films since the 2000s, he has received various accolades, including three Golden Globe Awards and a nomination for an Academy Award.
From July 2012 to December 2012, if you bought shares in companies when John J. Brennan joined the board, and sold them when he left, you would have a 2.4 percent return on your investment, compared to a 4.4 percent return from the S&P 500.