theoretical physicist and corresponding member of the Russian Academy of Sciences (RAS), Igor Ekhiel'evich Dzyaloshinskii. A disciple and colleague of the legendary Lev Davidovich Landau, one of the founders of the Institute of Theoretical Physics (ITP) of RAS, editor of the journal Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki (ZhETF Ð J. Exp. Teor. Phys.) and Pis'ma v ZhETF (JETP Lett.), professor at Moscow Institute of Physics and Technology (MIPT), the faculty of Mechanics and Mathematics of Lomonosov Moscow State University (mech.math. MSU), and theUniversity of California, Irvineì this is a short list of highlights in the scientiéc biography of Igor Ekhiel'evich. The scientific interests of Dzyaloshinskii cover the whole spectrum of condensed media theory; most of his papers have been widely recognized. Already in his younger days, Dzyaloshinskii became a leader in the community of the physics of magnetic phenomena and presented such results as the prediction of the `magnetoelectric effect,' the introduction of the `Dzyaloshinskii ±Moriya interaction,' and the theory of helical superstructures and commensurability effects. This topic is in the list of his publications for today: the epoch of multiferroics that came in the 2000s was, in fact, based on the predictions made more than half a century before by the young scientist I E Dzyaloshinskii. These studies were included in the candidate thesis Dzyaloshinskii defended in 1957. When speaking at the defense, Landau, who was not lavish in giving praise, said that Dzyaloshinskii was one of the most talented young theoreticians whom he had met in recent years. During that same time, the temperature diagram technique was developed. It was included in the written (together with A A Abrikosov and L P Gor'kov) handbook of several generationsÐMethods of Quantum Field Theory in Statistical PhysicsÐthat was awarded the 1989 L D Landau Prize. The book (``AGD'' or the ``Green Book'' as referred to by many generations of students, postgraduates, and research workers at ITP) laid foundation of the scientific language used to date by theoretical physicists around the world. The fundamental contributions due to Igor Ekhiel'evich involve the microscopic theory of van der Waals forces, onedimensional systems of interacting particles, quantum liquids and crystals, spin glasses, topological defects in magnets and liquid crystals (incidentally, it was precisely Dzyaloshinskii who introduced in Russian theoretical physics the idea that liquid crystals are an important area of application of general principles), exactly solvable models, an original renormalization group for high-temperature superconductors, states with time reversal symmetry violation. The scientific and pedagogical achievements of I E Dzyaloshinskii are well known and, in particular, were described in detail in previous well wishes marking milestones. It so happens that most of us (disciples and colleagues of I E Dzyaloshinskii) took part in these very celebrations in the journal Uspekhi Fizicheskikh Nauk (UFN) (see UFN 162 (1) 139 (1992); UFN 171 (2) 227 (2001); UFN 181 (2) 231 (2011)) (Physics±Uspekhi 35 (1) 49 (1992), Physics±Uspekhi 44 (2) 213 (2001), Physics±Uspekhi 54 (2) 221 (2011)). However, new interesting and important work by Dzyaloshinskii appeared recently. In particular, noteworthy are two of his studies that predicted theoretically (and then revealed experimentally using muon spectroscopy methods in an etalon Cr2O3 magnetoelectric) a very interesting and nontrivial phenomenon. Namely, it turns out that, in a certain geometry, electric charges induce a magnetic field with quadrupole and monopole symmetry on a magnetoelectric antiferromagnet surface, both in the sample itself and in the surrounding space. I E Dzyaloshinskii continues to work and, in this milestone year, is finishing preparation of a paper, in collaboration with an international group of experimentalists, on the inverse electrocaloric effect in ion liquids (predicted theoretically in an earlier study undertaken by Dzyaloshinskii and Obukhov). Uspekhi Fizicheskikh Nauk 191 (2) 223 ± 224 (2021) Translated by M V Tsaplina PERSONALIA PACS number: 01.60.+q

Игорь Ехиельевич Дзялошинский (к 80-летию со дня рождения), Абрикосов А.А., Андреев А.Ф., Бразовский С.А., Горьков Л.П., Кац Е.И., Кондратенко П.С., Обухов С.П., Питаевский Л.П., Прозорова Л.А., Халатников И.М., Хмельницкий Д.Е., Элиашберг Г.М.