pith:YZ26EXRV
The Cosmic Linear Anisotropy Solving System (CLASS) II: Approximation schemes
CLASS Boltzmann code uses three approximations for faster and more precise cosmology calculations.
arxiv:1104.2933 v3 · 2011-04-14 · astro-ph.CO
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Claims
The newly released code CLASS incorporates improved approximation schemes leading to a simultaneous gain in speed and precision.
The approximations remain sufficiently accurate for the full range of scales, redshifts, and parameter values relevant to current and near-future CMB and LSS analyses without introducing uncontrolled errors.
CLASS implements a tunable baryon-photon tight-coupling approximation, a new ultra-relativistic fluid approximation, and a radiation streaming approximation that accounts for reionization, yielding simultaneous gains in speed and precision.
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| First computed | 2026-07-04T19:46:39.005281Z |
|---|---|
| Builder | pith-number-builder-2026-05-17-v1 |
| Signature | Pith Ed25519
(pith-v1-2026-05) · public key |
| Schema | pith-number/v1.0 |
Canonical hash
c675e25e358b06661e01126ec1f7826cd60dd44efdacafe2bc38eeda78950f41
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Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/YZ26EXRVRMDGMHQBCJXMD54CNT \
| jq -c '.canonical_record' \
| python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c675e25e358b06661e01126ec1f7826cd60dd44efdacafe2bc38eeda78950f41
Canonical record JSON
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