A Categorification of the Burau representation at prime roots of unity

We construct a p-DG structure on an algebra Koszul dual to a zigzag algebra used by Khovanov and Seidel to construct a categorical braid group action. We show there is a braid group action in this p-DG setting.Comment: 33 pages, many PSTricks figures, color viewing not essential, v2 contains minor corrections, comments welcom

The Khovanov-Lauda 2-category and categorifications of a level two quantum sl(n) representation

We construct 2-functors from a 2-category categorifying quantum sl(n) to 2-categories categorifying the irreducible representation of highest weight $ 2 \omega_k.

Teachers Social Feedback on Test Performance of Primary School Pupils

This study investigated the effect of teachers’ social feedback on test performance of pupils. The study adopted the between-subject experimental design. Social feedback perception scale (SFPS) was designed and employed to measure the effect of teacher’s social feedback on the participants. Participants age ranges between 7 and 10 years (average age = 8.17 years). There were eight male and ten female pupils randomly selected from a private primary school in Ota, Ogun State. The odd-even number separation method was employed to place the participants into either the experimental or control groups. Two hypotheses were formulated for the study. The study found a significant effect of teachers social feedback on students’ perception (U = 33.500, N1 = 9, N2 = 9, p< 0.05, one-tailed) and a significant difference in perception of teachers social feedback among pupils based on gender (U = 27.571, N1 = 8, N2 = 10, p< 0.05, one-tailed). Both hypotheses were accepted. Consequent upon these findings, teachers are encouraged to use social feedback as it has a positive effect on pupil’s test performanc