Pith Number

pith:KDEQQRLF

pith:2015:KDEQQRLFRBASBTXFAKHQYSHMVJ

not attested not anchored not stored refs pending

Field-dependent symmetries in Friedmann-Robertson-Walker models

Sudhaker Upadhyay

arxiv:1503.04197 v2 · 2015-03-13 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KDEQQRLFRBASBTXFAKHQYSHMVJ}

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	2026-05-18T02:19:50.067350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50c9084565884120cee5028f0c48ecaa4390e919f9a4c5a0c469cab37fb5f0ff

Aliases

arxiv: 1503.04197 · arxiv_version: 1503.04197v2 · doi: 10.48550/arxiv.1503.04197 · pith_short_12: KDEQQRLFRBAS · pith_short_16: KDEQQRLFRBASBTXF · pith_short_8: KDEQQRLF

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/KDEQQRLFRBASBTXFAKHQYSHMVJ \
  | 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: 50c9084565884120cee5028f0c48ecaa4390e919f9a4c5a0c469cab37fb5f0ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5412a4f00af958595fa592fa2abe2a5d7e66fecd546459705e487415bfd8489e",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-03-13T10:04:31Z",
    "title_canon_sha256": "fec3c9a27da01570a4cb3a11bc16faa1686b7666bd0a22dd1fe0ebe67080fa5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.04197",
    "kind": "arxiv",
    "version": 2
  }
}