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1. A convergent genus expansion for the plateau

   https://doi.org/10.1007/JHEP09(2024)033  

   Saad, Phil; Stanford, Douglas; Yang, Zhenbin; Yao, Shunyu (September 2024, Journal of High Energy Physics)

   A<sc>bstract</sc> We conjecture a formula for the spectral form factor of a double-scaled matrix integral in the limit of large time, large density of states, and fixed temperature. The formula has a genus expansion with a nonzero radius of convergence. To understand the origin of this series, we compare to the semiclassical theory of “encounters” in periodic orbits. In Jackiw-Teitelboim (JT) gravity, encounters correspond to portions of the moduli space integral that mutually cancel (in the orientable case) but individually grow at low energies. At genus one we show how the full moduli space integral resolves the low energy region and gives a finite nonzero answer. 

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2. The dihedral genus of a knot

   https://doi.org/10.2140/agt.2020.20.1939  

   Cahn, Patricia; Kjuchukova, Alexandra (January 2020, Algebraic & Geometric Topology)
3. A Transducing Bacteriophage Infecting Staphylococcus epidermidis Contributes to the Expansion of a Novel Siphovirus Genus and Implies the Genus Is Inappropriate for Phage Therapy

   https://doi.org/10.1128/msphere.00524-22  

   Andrews, Taylor; Hoyer, J. Steen; Ficken, Karolyn; Fey, Paul D.; Duffy, Siobain; Boyd, Jeffrey M. (April 2023, mSphere)

   Imperiale, Michael J. (Ed.)

   ABSTRACT The effort to discover novel phages infecting Staphylococcus epidermidis contributes to both the development of phage therapy and the expansion of genome-based phage phylogeny. Here, we report the genome of an S. epidermidis -infecting phage, Lacachita, and compare its genome with those of five other phages with high sequence identity. These phages represent a novel siphovirus genus, which was recently reported in the literature. The published member of this group was favorably evaluated as a phage therapeutic agent, but Lacachita is capable of transducing antibiotic resistance and conferring phage resistance to transduced cells. Members of this genus may be maintained within their host as extrachromosomal plasmid prophages, through stable lysogeny or pseudolysogeny. Therefore, we conclude that Lacachita may be temperate and members of this novel genus are not suitable for phage therapy. IMPORTANCE This project describes the discovery of a culturable bacteriophage infecting Staphylococcus epidermidis that is a member of a rapidly growing novel siphovirus genus. A member of this genus was recently characterized and proposed for phage therapy, as there are few phages currently available to treat S. epidermidis infections. Our data contradict this, as we show Lacachita is capable of moving DNA from one bacterium to another, and it may be capable of maintaining itself in a plasmid-like state in infected cells. These phages’ putative plasmid-like extrachromosomal state appears to be due to a simplified maintenance mechanism found in true plasmids of Staphylococcus and related hosts. We suggest Lacachita and other identified members of this novel genus are not suitable for phage therapy. 

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4. Another puzzle piece in the systematics of the chewing louse genus Myrsidea, with a description of a new genus Apomyrsidea

   https://doi.org/https://doi.org/10.5852/ejt.2021.748.1339  

   Kolencik, Stanislav; Sychra, Oldřich; Allen, Julie M. (May 2021, European Journal of Taxonomy)

   null (Ed.)

   A new avian chewing louse genus Apomyrsidea gen. nov. is described based on species parasitizing birds in the family Formicariidae. Diagnostic characteristics and phylogenetic analyses were used to evaluate and confirm the generic status and merit its recognition as unique and different from Myrsidea Waterston, 1915. Three species previously belonging to the genus Myrsidea are placed in the new genus Apomyrsidea gen. nov. and are discussed: Apomyrsidea circumsternata (Valim & Weckstein, 2013) gen. et comb. nov., Apomyrsidea isacantha (Valim & Weckstein, 2013) gen. et comb. nov. and Apomyrsidea klimesi (Sychra in Sychra et al., 2006) gen. et comb. nov. 

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5. Notes on the genus Syntrichia with a revised infrageneric classification and the recognition of a new genus Syntrichiadelphus (Bryophyta, Pottiaceae)

   Brinda, J.C.; Jáuregui-Lazo, J.A.; Oliver, M.J.; Mishler, B.D. (December 2021, Phytologia)

   A revised infrageneric classification of the genus Syntrichia Brid. is proposed that includes the segregation of a new genus Syntrichiadelphus for the species currently known as Syntrichia flagellaris (Schimp.) R.H. Zander. In addition, a synopsis of Syntrichia for Madagascar is presented with new synonymy, lectotypifications, and Syntrichia ammonsiana (H.A. Crum & L.E. Anderson) Ochyra newly reported from the island. Published online www.phytologia.org Phytologia 103(4): 90-103 (December 22, 2021). ISSN 030319430. 

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