Piotr Milczarski

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It is shown that a change of variable in 1-dim Schrödinger equation applied to the Borel summable fundamental solutions [8, 9] is equivalent to Borel resummation of the fundamental solutions multiplied by suitably chosen ¯ h-dependent constant. This explains why change of variable can improve JWKB formulae [11]. It is shown also that a change of variable(More)
In the paper, we present enhancements of the encryption method for secure data transmission used in Secure Data Exchange method (SDEx) [1–3]. Potential weaknesses and possible attacks have been previously described in [4]. The new version of the encryption method is immune to indicated in [4] vulnerabilities connected with the potential knowledge of the(More)