On vectorial approximation
نویسندگان
چکیده
منابع مشابه
On Cryptographically Secure Vectorial Boolean Functions
In this paper, we show the rst method to construct vecto-rial bent functions which satisfy both the largest degree and the largest number of output bits simultaneously. We next apply this method to construct balanced vectorial Boolean functions which have larger non-linearities than previously known constructions.
متن کاملEvidence of vectorial photoelectric effect on Copper
Quantum Efficiency (QE) measurements of single photon photoemission from a Cu(111) single crystal and a Cu polycrystal photocathodes, irradiated by 150 fs-6.28 eV laser pulses, are reported over a broad range of incidence angle, both in s and p polarizations. The maximum QE (≃ 4×10−4) for polycrystalline Cu is obtained in p polarization at an angle of incidence θ = 65◦. We observe a QE enhancem...
متن کاملOn the Vectorial Hamilton-jacobi System
We discuss some recent developments in the study of regularity and stability for a first order Hamilton-Jacobi system: ∇u(x) ∈ K, where K is a closed set of n × m-matrices and u is a map from a domain Ω ⊂ R to R. For regularity of solutions, we obtain a higher integrability from a very weak integral coercivity condition known as the L-mean coercivity. For the stability, we study W sequences {uj...
متن کاملThe vectorial λ-calculus
We describe a type system for the linear-algebraic λ-calculus. The type system accounts for the linear-algebraic aspects of this extension of λ-calculus: it is able to statically describe the linear combinations of terms that will be obtained when reducing the programs. This gives rise to an original type theory where types, in the same way as terms, can be superposed into linear combinations. ...
متن کاملNormality of Vectorial Functions
The most important building blocks of symmetric cryptographic primitives such as the DES or the AES, are vectorial Boolean functions, also called S-boxes. In this paper, we extend the definition of normality for Boolean functions into several new affine invariant properties for vectorial Boolean functions. We compute the probability of occurrence of these properties and present practical algori...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Approximation Theory
سال: 1974
ISSN: 0021-9045
DOI: 10.1016/0021-9045(74)90095-1