had already been shown in 1987 by Antony Wassermann.
Injectivity is known for a much larger class of groups thanks to the Dirac-dual-Dirac method. This goes back to ideas of Michael Atiyah and was developed in great generality by Gennadi Kasparov in 1987.
Injectivity is known for the following classes:
 Discrete subgroups of connected Lie groups or virtually connected Lie groups.
 Discrete subgroups of p-adic groups.
 Bolic groups (a certain generalization of hyperbolic groups).
 Groups which admit an amenable action on some compact space.

The simplest example of a group for which it is not known whether it satisfies the conjecture is .

References

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External links
On the Baum-Connes conjecture by Dmitry Matsnev.

Category:C*-algebras
Category:K-theory
Category:Surgery theory
Category:Conjectures
Category:Unsolved problems in mathematicsCameron faces calls to resign after admitting of shares in offshore fund

By VICE News and Reuters
After a week in which he has been forced into making daily public statements, British Prime Minister David Cameron finally admitted in a TV interview on Thursday that he once had a stake in his late father’s offshore trust, which was named in the Panama Papers.
Opposition politicians immediately called on him to resign for being “less than honest” with the British people, and demanded he publish full details of his tax arrangements immediately. The topic #ResignCameron was trending on Twitter on Friday morning.Cameron told ITV News that he had owned shares in the Panamanian trust, Blairmore Holdings, but had sold them in 2010, before becoming prime minister.
“We owned 5,000 units in Blairmore Investment