Dear members of SIGCIS, I am happy to announce the publication of a special issue of Revue de Synthèse (vol 139: 3-4, 2018) on "Mathematics and Machines", edited by Liesbeth De Mol, Marie-José Durand-Richard and myself . The issue looks at the interactions between mathematics and manual, analogue or digital computation and focuses on the period before and after World War II. I attach our English translation of the introduction, explaining the topic and outlining the articles of the special issue. The issue itself is online here: https://brill.com/view/journals/rds/139/3-4/rds.139.issue-3-4.xml (While access to the issue is restricted, some of the articles can be found in preprint form on HAL-SHS Archives Ouvertes, https://halshs.archives-ouvertes.fr/ notably nrs. halshs-01541616 and hal-01814822) CONTENT: VOL 139: 3-4, 2018: SPECIAL ISSUE: "MATHÉMATIQUES ET MACHINES", ed. by Liesbeth De Mol, Maarten Bullynck and Marie-José Durand-Richard * Liesbeth De Mol, Maarten Bullynck and Marie-José Durand-Richard _Introduction: Mathématiques et machines_ (pp.235-239) * Maarten Bullynck _Programming Men and Machines. Changing Organisation in the Artillery Computations at Aberdeen Proving Ground (1916-1946)_, (pp. 241-266) * Allan Olley _A Task that Exceeded the Technology: Early Applications of the Computer to the Lunar Three-body Problem_ (pp. 267-288) * Marie-José Durand-Richard _De l'analyseur différentiel à l'ordinateur : le parcours de Douglas R. Hartree (1897-1958)_ (pp. 289-326) * Loïc Petitgirard _Machines analogiques et mathématiques des systèmes dynamiques. Le groupe de « Dynamique théorique » de Théodore Vogel à Marseille (France), 1948-1964_ (pp. 327-360) * Liesbeth De Mol and Maarten Bullynck _Making the History of Computing. The History of Computing in the History of Technology and the History of Mathematics_ (pp. 361-380) * _Des mathématiques, des machines et des hommes_ (Review section, pp. 419-432) best wishes, Maarten Bullynck Département de mathématiques & histoire des sciences & UMR 8533 IDHE.S Université Paris 8