People trade thousands of non-fungible tokens (NFT) daily. The NFT prices are expressed in cryptocurrency, and it is volatile. As the interest NFTs changes, their vary with time too. Is there an immanent meter to order by value? Within a single collection, vector features–traits–characterizes NFT. construct rarity meters based on assumed value trait rarity. But this process lacks formalism. In ...

A t-(v, k, A) design is a pair (X, B), where 99 is a collection of subsets of size k (called blocks) from a set X of cardinality u such that every t-element subset of X is contained in exactly 1 blocks of B. If the blocks in GJ are not repeated, the design is said to be simple. It is easy to show that the minimum value of L for which a 3-(28,.5, A) design can possibly exist is 30. The existence...

INTRODUCTION It had been shown (Matthews, 19516) that reasonably accurate orientation and homing could be obtained with young pigeons after a minimal training up to 25 miles. Recently Kramer & St Paul (1952) and Kramer (1953) have obtained similar results with older pigeons trained up to 10 miles only. Training thus appeared to be rather less essential than had been supposed, and to investigate...

A theorem on existence of mixed strategy equilibria in discontinuous zero-sum games is proved and applied to three models of elections. First, the existence theorem yields a mixed strategy equilibrium in the multidimensional spatial model of elections with three voters. A nine-voter example shows that a key condition of the existence theorem is violated for general finite numbers of voters and ...

A t-(v, k, λ) design is quasi-symmetric if there are only two block intersection sizes. We adapt the Kramer-Mesner construction method for designs with prescribed automorphism groups to the quasi-symmetric case. Using the adapted method, we find many new quasi-symmetric 2-(28, 12, 11) and 2-(36, 16, 12) designs, establish the existence of quasi-symmetric 2-(56, 16, 18) designs, and find three n...