Pith Number

pith:R2XTO43T

pith:2013:R2XTO43T6KUA7LTSMLGSU2WVGH

not attested not anchored not stored refs pending

Time-reparametrization invariance and Hamilton-Jacobi approach to the cosmological sigma-model

Jan-Willem van Holten, Richard Kerner

arxiv:1308.4498 v1 · 2013-08-21 · hep-th · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R2XTO43T6KUA7LTSMLGSU2WVGH}

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	2026-05-18T01:26:19.139879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8eaf377373f2a80fae7262cd2a6ad531e9cbe092955293771f6d6b262784af0a

Aliases

arxiv: 1308.4498 · arxiv_version: 1308.4498v1 · doi: 10.48550/arxiv.1308.4498 · pith_short_12: R2XTO43T6KUA · pith_short_16: R2XTO43T6KUA7LTS · pith_short_8: R2XTO43T

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/R2XTO43T6KUA7LTSMLGSU2WVGH \
  | 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: 8eaf377373f2a80fae7262cd2a6ad531e9cbe092955293771f6d6b262784af0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "881d908d7e0cd054efd3958793550d47b1599f275b37017aad22cb26fd61a1ce",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2013-08-21T07:15:41Z",
    "title_canon_sha256": "8db3966c922b4d8b5ca0d20e72addc9d5effc9f8cd90b050f84078698053b2e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4498",
    "kind": "arxiv",
    "version": 1
  }
}