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Article
Symmetries, integrals and solutions of ordinary differential equations of maximal symmetry
Second- and third-order scalar ordinary differential equations of maximal symmetry in the traditional sense of point, respectively contact, symmetry are examined for the map**s they produce in solutions and ...
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Chapter and Conference Paper
Acceleration of Diffusional Jumps of Interstitial Fe with Increasing Ge Concentration in Si1−xGex Alloys Observed by Mössbauer Spectroscopy
Radioactive 57Mn isotopes have been implanted into Si1−xGex crystals (x ≤ 0.1) at elevated temperatures for Mössbauer studies of the diffusion of interstitial 57Fe daughter atoms. The atomic jump frequency is fou...
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Article
Open AccessSymmetry Reductions of a Hamilton-Jacobi-Bellman Equation Arising in Financial Mathematics
We determine the solutions of a nonlinear Hamilton-Jacobi-Bellman equation which arises in the modelling of mean-variance hedging subject to a terminal condition. Firstly we establish those forms of the equati...
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Article
Acceleration of Diffusional Jumps of Interstitial Fe with Increasing Ge Concentration in Si1 − x Ge x Alloys Observed by Mössbauer Spectroscopy
Radioactive 57Mn isotopes have been implanted into Si1 − x Ge x crystals (x ≤ 0.1) at elevated temperatures for Mössbauer studies of the diffusion of int...
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Article
The electric field gradient at111Cd in vanadium oxides
The electric field gradient (efg) of111Cd in polycrystalline V2O5 was studied using perturbed angular correlation (PAC) spectroscopy, with the111In activity ion-implanted at 400 keV. Between the individual steps ...