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Ergodicity for neutral type SDEs with infinite length of memory Early View

  • Journal: Mathematische Nachrichten
  • Authors: Jianhai Bao, Feng‐Yu Wang, Chenggui Yuan
  • Published Date: Jun 24, 2020

Abstract In this paper, the weak Harris theorem developed in [18] is illustrated by using a straightforward Wasserstein coupling, which implies the exponential ergodicity of the functional solutions...

Revisiting the Gross–Zagier discriminant formula Early View

  • Journal: Mathematische Nachrichten
  • Authors: Dongxi Ye
  • Published Date: Jun 24, 2020

Abstract We derive a formula for the discriminant of the ring class polynomial of conductor N associated to the j‐invariant and an imaginary quadratic field of odd discriminant −d using the theory of...

Continuous‐time mean–variance portfolio selection: A reinforcement learning framework Early View

  • Journal: Mathematical Finance
  • Authors: Haoran Wang, Xun Yu Zhou
  • Published Date: Jun 23, 2020

Abstract We approach the continuous‐time mean–variance portfolio selection with reinforcement learning (RL). The problem is to achieve the best trade‐off between exploration and exploitation, and is...

Governing climate risks in the face of normative uncertainties Early View

  • Journal: Wiley Interdisciplinary Reviews: Climate Change
  • Authors: Behnam Taebi, Jan H. Kwakkel, Céline Kermisch
  • Published Date: Jun 23, 2020

Abstract Governing risks is not only a technical matter, but also a matter of ethical and societal considerations. In this article, we argue that in addition to scientific and technical uncertainties,...

Unravelling the polyphony in clinical reasoning research in medical education Early View

  • Journal: Journal of Evaluation in Clinical Practice
  • Authors: Charilaos Koufidis, Katri Manninen, Juha Nieminen, Martin Wohlin, Charlotte Silén
  • Published Date: Jun 23, 2020

Abstract Rationale Clinical reasoning lies at the heart of medical practice and has a long research tradition. Nevertheless, research is scattered across diverse academic disciplines with different...

Marketing strategy selection of referral reward under social network: RRWS, RRMS, or dual strategy? Early View

  • Journal: International Transactions in Operational Research
  • Authors: Mei Gao, Meng Zhao, Jinlei Qin
  • Published Date: Jun 23, 2020

Abstract With the arrival of the social media era and the fragmentation of consumer habits, how to develop the optimal marketing strategy for products has become a hot topic. When a consumer purchases...

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Published features on are checked for statistical accuracy by a panel from the European Network for Business and Industrial Statistics (ENBIS)   to whom Wiley and express their gratitude. This panel are: Ron Kenett, David Steinberg, Shirley Coleman, Irena Ograjenšek, Fabrizio Ruggeri, Rainer Göb, Philippe Castagliola, Xavier Tort-Martorell, Bart De Ketelaere, Antonio Pievatolo, Martina Vandebroek, Lance Mitchell, Gilbert Saporta, Helmut Waldl and Stelios Psarakis.