Pith. sign in
Pith Number

pith:C7IRGIRB

pith:2020:C7IRGIRBINWRTQ3MMGNTRSDMYA
not attested not anchored not stored refs pending

Pseudoinvariance and the extra degree of freedom in f(T) gravity

Mar\'ia Jos\'e Guzm\'an, Rafael Ferraro

arxiv:2001.08137 v2 · 2020-01-22 · gr-qc · physics.class-ph

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{C7IRGIRBINWRTQ3MMGNTRSDMYA}

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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.

Cited by

2 papers in Pith

Receipt and verification
First computed 2026-07-05T00:57:52.001274Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

17d1132221436d19c36c619b38c86cc034dfb46e84c1f4260dbb6b0369009427

Aliases

arxiv: 2001.08137 · arxiv_version: 2001.08137v2 · doi: 10.48550/arxiv.2001.08137 · pith_short_12: C7IRGIRBINWR · pith_short_16: C7IRGIRBINWRTQ3M · pith_short_8: C7IRGIRB
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/C7IRGIRBINWRTQ3MMGNTRSDMYA \
  | 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: 17d1132221436d19c36c619b38c86cc034dfb46e84c1f4260dbb6b0369009427
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "08b0c45973b162203091279ccaf0c044b0d31bfeea62dd9df01bf37e5e4442ff",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-01-22T16:34:34Z",
    "title_canon_sha256": "4c1e899c3936b9bbbf083171abcfc08ab499b0ed7fe82a0b42e35e135c556d1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.08137",
    "kind": "arxiv",
    "version": 2
  }
}