Pith Number

pith:SQGS2LGG

pith:2021:SQGS2LGG5ZE6SFXD7XSZ5Y25CE

not attested not anchored not stored refs pending

A parametrized Kalman filter for fast track fitting at LHCb

(2) Institute of Physics, (3) Physikalisches Institut, CNRS/IN2P3, Ecole Polytechnique F\'ed\'erale de Lausanne (EPFL), France, Germany), Heidelberg, Lausanne, Michel De Cian (2), Paris, Paris Diderot Sorbonne Paris Cit\'e, Paul Andr\'e G\"unther (3), Pierre Billoir (1), Ruprecht-Karls-Universit\"at Heidelberg, Simon Stemmle (3) ((1) LPNHE, Sorbonne Universit\'e, Switzerland

arxiv:2101.12040 v2 · 2021-01-28 · physics.ins-det · hep-ex

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SQGS2LGG5ZE6SFXD7XSZ5Y25CE}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T02:40:31.548547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

940d2d2cc6ee49e916e3fde59ee35d110b5586a7c49c92de309e4c8e86ddb0e2

Aliases

arxiv: 2101.12040 · arxiv_version: 2101.12040v2 · doi: 10.48550/arxiv.2101.12040 · pith_short_12: SQGS2LGG5ZE6 · pith_short_16: SQGS2LGG5ZE6SFXD · pith_short_8: SQGS2LGG

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SQGS2LGG5ZE6SFXD7XSZ5Y25CE \
  | 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: 940d2d2cc6ee49e916e3fde59ee35d110b5586a7c49c92de309e4c8e86ddb0e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed9e71fd41fc590ab189d8e3144863e48851979f305457b5f5afd00bd59112c1",
    "cross_cats_sorted": [
      "hep-ex"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2021-01-28T14:57:33Z",
    "title_canon_sha256": "687a271fa40a0669e47fc58064f37962785ec1ffe93afe1be33946fe15e80a49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.12040",
    "kind": "arxiv",
    "version": 2
  }
}