** Feast of the Guardian Angels

** Reviewed by Adam Thorpe in The Guardian, 23 December 2006.

** Guardian darter, Etheostoma oophylax.

** Reviewed by PD Smith in The Guardian, January 20, 2007.

** Interactive Guide: Sheikh Yassin assassination – The Guardian

** Guardian Obituary

** Liber LXV: Liber Cordis Cincti Serpente — An account of the relations of the aspirant and his Holy Guardian Angel.

** We had the very best of intentions Richard Perle in The Guardian May 30, 2007

** Thank God for the Death of the UN Richard Perle in The Guardian March 21, 2003

** 1889 Jun 8, in The Nottinghamshire Guardian

** 1898 Apr 23, in The Nottinghamshire Guardian

** 1894 Jun 16, in The Nottinghamshire Guardian

** 1896 Feb 15, 22, in The Nottinghamshire Guardian

** 1896 Nov 7, in The Nottinghamshire Guardian

** 1896 Nov 14, in The Nottinghamshire Guardian

** 1896 Dec 12, in The Nottinghamshire Guardian

** 1898 Jul 9, in The Nottinghamshire Guardian

** 1899 Jul 22, in The Nottinghamshire Guardian

** Grumman AF Guardian

** Reviewed by Emma Brockes " We had the same pain " in The Guardian November 29, 2004.

** Guardian 6 June 2002: In pictures the V sign

** David Cameron's columns ( 2001 – 2004 ) as Conservative Party diarist at The Guardian

** reply in letters page, The Guardian ( UK ), 2 December 2004

** The Guardian, 9 May 2008

** The Guardian

** Eunectes murinus, the green anaconda, the largest species, is found east of the Andes in Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil and on the island of Trinidad.

** Eunectes notaeus, the yellow anaconda, a smaller species, is found in eastern Bolivia, southern Brazil, Paraguay and northeastern Argentina.

** Eunectes deschauenseei, the dark-spotted anaconda, is a rare species found in northeastern Brazil and coastal French Guiana.

** Eunectes beniensis, the Bolivian anaconda, the most recently defined species, is found in the Departments of Beni and Pando in Bolivia.

** Tarski's theorem: For every infinite set A, there is a bijective map between the sets A and A × A.

** The Cartesian product of any family of nonempty sets is nonempty.

** König's theorem: Colloquially, the sum of a sequence of cardinals is strictly less than the product of a sequence of larger cardinals.

** Hausdorff maximal principle: In any partially ordered set, every totally ordered subset is contained in a maximal totally ordered subset.

** For every non-empty set S there is a binary operation defined on S that makes it a group.

** Tychonoff's theorem stating that every product of compact topological spaces is compact.

** In the product topology, the closure of a product of subsets is equal to the product of the closures.

** If S is a set of sentences of first-order logic and B is a consistent subset of S, then B is included in a set that is maximal among consistent subsets of S. The special case where S is the set of all first-order sentences in a given signature is weaker, equivalent to the Boolean prime ideal theorem ; see the section " Weaker forms " below.

** Any union of countably many countable sets is itself countable.

** If the set A is infinite, then there exists an injection from the natural numbers N to A ( see Dedekind infinite ).

** Every infinite game in which is a Borel subset of Baire space is determined.

** The Vitali theorem on the existence of non-measurable sets which states that there is a subset of the real numbers that is not Lebesgue measurable.

** The Lebesgue measure of a countable disjoint union of measurable sets is equal to the sum of the measures of the individual sets.

** The Nielsen – Schreier theorem, that every subgroup of a free group is free.