Most books on algebra are pretty much alike. For self study you can almost always find decent algebra books for sale at large bookstores (closing out inventory for various schools). Algebra at this level is a basic tool, and it is critical to do many problems until doing them becomes automatic. It is also critical to move on to calculus with out much delay. For the student who has already reached calculus I suggest Gullberg as a reference.
Combinatory logic is a notation to eliminate the need for quantified variables in mathematical logic. It was introduced by Moses Schönfinkel and Haskell ...
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Surge in immigrant minors found along the border leads to use of military base to hold them . The number of unaccompanied migrant children intercepted at and between ports of entry on the US-Mexico border has surged in recent months. Between October 2011 and March 2012, 5,252 migrant children arrived in the United States without a guardian, 1,390 of them in March alone. This represents a 93 percent increase compared to the same time period one year ago. Unaccompanied minors come predominantly from Guatemala, Honduras, El Salvador, and Mexico. They first are processed by the Department of Homeland Security (DHS) and then referred to the Office of Refugee Resettlement in the Department of Health and Human Services (DHHS), which places most of them in shelters during the initial stage of their immigration proceedings.
The following three rules give an inductive definition that can be applied to build all syntactically valid lambda terms: