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We get new Hopf algebras (HA): 1. A wealth of quotient HA’s of the Malvenuto-Reutenauer HA (the Loday-Ronco HA being a special case). They consist of the permutations avoiding an {\it arbitrary} set of permutations without global descents, 2. A HA of pairs of parking filtrations, and 3. Four HA of pairs of preorders. New concepts in this setting are: 1. a category Set whose objects are sets, but morphisms are represented by matrices of natural numbers, and 2. restriction species on sets coming with pairs of natural transformations Pre to the species of preorders. These induce two coproducts and . Dualizing gives product and coproduct , giving bimonoid species.

生成讲解博客的中文版本

生成AI智能校验的中文版本