A. Baudisch, A. Martin-pizarro, and M. Ziegler, An alternative approach to the free pseudospace, in preparation, 2013.

T. Blossier, A. Martin-pizarro, and F. O. Wagner, On variants of CM-triviality, Fundamenta Mathematicae, vol.219, issue.3, pp.253-262, 2012.
DOI : 10.4064/fm219-3-4
URL : https://hal.archives-ouvertes.fr/hal-00702683

D. Evans, Abstract, The Journal of Symbolic Logic, vol.65, issue.04, pp.1385-1402, 2003.
DOI : 10.1016/0168-0072(93)90171-9

R. Fra¨?sséfra¨?ssé, Sur quelques classifications des systèmes de relations, Publ. Scient. de l'Université d'Alger, pp.35-182, 1954.

J. B. Goode, Some trivial considerations, The Journal of Symbolic Logic, vol.51, issue.02, pp.624-631, 1991.
DOI : 10.1007/BFb0082241

E. Hrushovski, A new strongly minimal set, Annals of Pure and Applied Logic, vol.62, issue.2, pp.147-166, 1993.
DOI : 10.1016/0168-0072(93)90171-9

P. Kowalski and A. Pillay, Quantifier elimination for algebraic $D$-groups, Transactions of the American Mathematical Society, vol.358, issue.1, pp.167-181, 2006.
DOI : 10.1090/S0002-9947-05-03820-1

M. Morley, Categoricity in power, Transactions of the American Mathematical Society, vol.114, issue.2, pp.514-538, 1965.
DOI : 10.1090/S0002-9947-1965-0175782-0

A. Pillay, Abstract, The Journal of Symbolic Logic, vol.54, issue.04, pp.1251-1259, 1995.
DOI : 10.1007/BFb0082241

A. Pillay, A note on CM-triviality and the geometry of forking, The Journal of Symbolic Logic, vol.60, issue.01, pp.474-480, 2000.
DOI : 10.1016/0168-0072(93)90171-9

K. Tent, The free pseudospace is n-ample, but not (n + 1)-ample, preprint, 2011.

K. Tent and M. Ziegler, A course in Model Theory, 2012.
DOI : 10.1017/CBO9781139015417

F. O. Wagner, Abstract, The Journal of Symbolic Logic, vol.71, issue.04, pp.1473-1495, 1998.
DOI : 10.1016/0021-8693(92)90165-I

M. Ziegler, Strong Fra¨?sséFra¨?ssé limits, preprint, 2011.

. Institut-für-mathematik, D. Humboldt-universität-zu-berlin, and . Berlin, Germany E-mail address: baudisch@mathematik.hu-berlin, p.69622, 1918.