A split preorder is a preordering relation on the disjoint union of two sets, which function as source and target when one composes split preorders. The paper presents by generators and equations the category SplPre, whose arrows are the split preorders on the disjoint union of two finite ordinals. The same is done for the subcategory Gen of SplPre, whose arrows are equivalence relations, and f...

Three new genera and four new species of omomyid primates constitute the first record of the Primates from upland middle Eocene rocks of Wyoming. One of these, Strigorhysis, gen. nov., possesses broadly basined molars with highly crenulated enamel which probably indicates a good deal of tough vegetable matter in its diet. Each of the new genera could have descended from known Wasatchian or earl...

A new genus, Teramnonotus n. gen., is erected for Elamena gordonae Monod, 1956. The new genus includes two new species, T. johnlucasi n. gen., n. sp. and T. monodi n. gen., n. sp., described herein from eastern Australia (Queensland) and the southwestern Atlantic (Brazil), respectively. Teramnonotus n. gen. superficially resembles Elamena H. Milne Edwards, 1837, and Trigonoplax H. Milne Edwards...

A new genus and two new species of Luzarinae crickets (Grylloidea, Phalangopsidae) are described from the Atlantic Forest of Northeast Brazil. Marcgraviella muriciensis Souza-Dias n. gen., n. sp. and M. christianae Desutter-Grandcolas & Souza-Dias n. gen., n. sp. are described using characters of morphology and male genitalia. The new genus is characterized by male genitalia singularities, pres...

2 Winsor, C. P., and Clark, A. B., Ibid., 22, 400 (1936); Hecht, S., Haig, Ch., and Chase, A. M., Jour. Gen. Physiol., 20, 831 (1937); Wald, G., and Clark, A. B., Ibid., 21, 93 (1937); Hecht, S., these PROCEEDINGS, 23, 227 (1937). 3 Rowland, W. M., and Sloan, L. L., Jour. Opt. Soc. Am., 34, 601 (1944); Hecht, S., and Yun Hsia, Ibid., 35, 261 (1945). " Wolf, E., and Zerrahn-Wolf, G., Jour. Gen. ...

We demonstrate how virtually all common cardinal invariants associated to a von Neumann algebra M can be computed from the decomposability number, dec(M), and the minimal cardinality of a generating set, gen(M). Applications include the equivalence of the well-known generator problem, “Is every separably-acting von Neumann algebra singly-generated?”, with the formally stronger questions, “Is ev...

Low-cost Radio Frequency Identification (RFID) tags are devices with very limited computational capability, in which only 250-4K logic gates can be devoted to securityrelated tasks. Classical cryptographic primitives such as block ciphers or hash functions are well beyond the computational capabilities of low-cost RFID tags, as ratified by the EPCglobal Class-1 Gen-2 RFID specification. Moreove...

A new genus with two new species, Codoserphus calophlebius gen. et sp. nov. and Codoserphus euneurus gen. et sp. nov., assigned to the subfamily Mesoserphinae of Mesoserphidae, are described from the Jehol Biota, Early Cretaceous Yixian Formation of Huangbanjigou Village in Liaoning, China. Codoserphus gen. nov. is characterized by its fore wing with all major veins present, not reduced, and l ...

The monophyletic group of myrmicine ant genera related to Eutetramorium is described and its taxonomy is documented. The group is endemic in Madagascar and contains five genera: Eutetramorium Emery, 1899 (3 species, 1 of which is new); Malagidris nom. n., a replacement name for Brunella Forel, 1917, junior homonym of Brunella Smith, G.W. 1909 (Crustacea) (6 species, 5 of which are new); Myrmisa...