I.R.S.

'Hwb i'r economi a'r Gymraeg' – beth fydd gwir waddol Eisteddfod yr Urdd Môn 2026?

Wrth i'r pebyll gael eu tynnu lawr ac i faes Eisteddfod yr Urdd Ynys Môn wagio, mae llawer yn gofyn yr un cwestiwn – be' fydd gwaddol yr ŵyl ar yr ynys?

'O'r diwedd mae ymchwil i effaith ergydion i'r pen ar ferched'

R+R: Reassessing Java Security API Misuse in Current LLMs: A Replication on JCA and JSSE APIs with External Security Knowledge

new Abstract: The misuse of Java security APIs is a serious security problem in software development. Research in 2024 has shown that this problem is widespread in LLM-generated code. However, it remains unclear whether this phenomenon persists in current models and how external security knowledge affects it.

Ai trefn debyg i'r Alpau yw'r ateb i broblemau parcio Eryri?

Y cynnig gofal plant: 'Beth yw'r costau a'r amserlen lawn?'

Neutron star merger simulations gain new precision with AI-driven r-process heating

Neutron star merger simulations gain new precision with AI-driven r-process heating Gaby Clark Scientific Editor Robert Egan Associate Editor Using a novel simulation model based on machine learning, an international research team at GSI/FAIR has succeeded in gaining a deeper understanding of element formation in stellar events such as neutron star mergers. For the first time, the scientists used deep learning with a neural network to model the energy release during r-process nucleosynthesis...

R\'enyi divergences and binary state discrimination error exponents for fermionic quasi-free states

Announce Type: cross Abstract: The trade-off relations between the two types of error probabilities in binary i.i.d. quantum state discrimination can be expressed by single-copy formulas in terms of the Petz-type and the sandwiched R\'enyi divergences of the two states representing the two hypotheses. setting, the error exponents can usually be expressed in terms of regularized R\'enyi divergences, which do not admit explicit formulas in general.

Effective Constrained Scalar--Gauss--Bonnet Inflation Motivated by $f(R,\mathcal{G})$ Gravity

arXiv:2606.05212v1 Announce Type: new Abstract: We develop an effective framework for inflation in a constrained scalar--Gauss--Bonnet theory motivated by a restricted sector of $f(R,\mathcal{G})$ gravity. Using unified parametrizations of the Hubble expansion rate and the Gauss--Bonnet coupling function within a generalized slow-roll formalism, we derive analytical expressions for the scalar spectral index $n_s$ and tensor-to-scalar ratio $r$, and study their dependence on the model parameters.

Constructions of Quantum $(r,\delta)$-LRCs from cyclic codes

Announce Type: new Abstract: Classical $(r,\delta)$ locally recoverable codes (LRCs) play a central role in distributed data storage systems as they enable an efficient recovery from erasures by accessing a small number of surviving symbols. Motivated by their prospective use in future quantum data storage and by recent theoretical progress on quantum locally recoverable codes (qLRCs), we investigate the construction of qLRCs from classical cyclic $(r,\delta)$-LRCs. Our approach identifies...

Pam nad yw menyw gyflymaf Cymru yn cael rhedeg yng Ngemau'r Gymanwlad?

Hannah Brier ydi'r fenyw gyflymaf erioed yn hanes athletau Cymru, ond dydy hi ddim wedi cael ei dewis ar gyfer Gemau'r Gymanwlad.