First Announcementhereby we remind You that the International Conference on Topological Algebras and Their Applications "ICTAA 2018" will be held from January 25th until January 28th 2018 at the Tallinn University, Tallinn, Estonia. The topics of the conference are preferably connected with the topic of the General Theory of Topological Algebras and its applications like Categories of Topological Algebras, Topological Rings, Topological Linear Spaces, Topological Modules, Topological Groups and Semigroups, Bornological Structures, Sheaf Theory, Bundle Theory, Topological K-theory, etc. The scientific session, which will take place from January 25th until January 27th, will consist of talks of 25 or 50 minutes. We also plan to publish a special issue of the conference proceedings in the Mathematics Studies series of the Estonian Mathematical Society in late 2018. The deadline for the registration is December 1st 2017 and for the Abstracts is January 15th, 2018. Conference web page is http://www.cs.tlu.ee/ictaa2018/ . On the web page of the conference You will also find some information about the style of the abstracts. We have finally been able to negotiate some special prices for staying at 3 hotels nearby the conference venue. Please find the detailed information about the hotels at the web page of the conference. You can register by sending an e-mail to mabel@tlu.ee. The proposed conference fee is 100 Euros, which will include the cost of coffee breaks, excursion, banquet, conference materials and proceedings. Hoping to see You in (hopefully snowy) Tallinn in January 2018! On behalf of the organisers, Mart Abel |