We give a method to extend Bell exponential polynomials to negative indices. This generalizes many results of this type such as the extension to negative indices of Stirling numbers or of Bernoulli numbers.
@article{bwmeta1.element.bwnjournal-article-doi-10_7151_dmgaa_1105, author = {Benali Benzaghou and Daniel Barsky}, title = {Extension of classical sequences to negative integers}, journal = {Discussiones Mathematicae - General Algebra and Applications}, volume = {26}, year = {2006}, pages = {75-83}, zbl = {1096.11006}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_7151_dmgaa_1105} }
Benali Benzaghou; Daniel Barsky. Extension of classical sequences to negative integers. Discussiones Mathematicae - General Algebra and Applications, Tome 26 (2006) pp. 75-83. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_7151_dmgaa_1105/
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