We discuss the ordinary quantum Hall effect and a higher-dimensional cousin. We consider the dimensional reduction of these effects to 1+1 and 3 + 1 space-time dimensions, respectively. After dimensional reduction, an axion field appears, which plays the rôle of a space-time dependent difference of chemical potentials of chiral modes. As applications, we sketch a theory of quantum pumps and a m...

In 2020, a new site of the ghost orchid (Epipogium aphyllum Swartz) was found in area Mt. Jadovnik, near Drvar western part Bosnia and Herzegovina. This mycoheterotrophic belongs to one rarest least known species orchids world. The paper gives brief description ecology species, habitat conditions area, an overview previous records for It beech fir dominated primeval forest, Visućka draga on Jad...

In this paper, we claim that language is likely to have emerged as a mechanism for coordinating the solution of complex tasks. To confirm this thesis, computer simulations are performed based on the coordination task presented by Garrod & Anderson (1987). The role of success in task-oriented dialogue is analytically evaluated with the help of performance measurements and a thorough lexical anal...

We present the results of colour-selection of candidate high redshift (2.6 < z < 3.9) galaxies within the Hubble Deep Field based on the Ly-break at 912Å. We find 8 such objects in the region, giving a comoving number density comparable to that of nearby bright galaxies (for a flat q0=0.5, H0=100 kms Mpc universe). We provide basic data on the properties of these objects, and show that despite ...

We propose that the trapped antimatter in super massive black hole ergoregions acts as detonators triggers to white transitions creating huge BHs explosions generate BH spray seeds for new galaxies creation. by mapping and simulating cosmic web structure, it may be possible learn if universe was created a single big bang started chain of mini-creation event cycles, or alternatively, cycles are ...