Pith Number

pith:WRL6J2FX

pith:2021:WRL6J2FXVRNV3ANKWJX4MHKRGV

not attested not anchored not stored refs pending

Slowly expanding stable dust spacetimes

David Fajman, Maximilian Ofner, Zoe Wyatt

arxiv:2107.00457 v1 · 2021-07-01 · gr-qc · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WRL6J2FXVRNV3ANKWJX4MHKRGV}

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.

Cited by

1 paper in Pith

Instability of Slowly Expanding FLRW Spacetimes

Receipt and verification

First computed	2026-07-05T02:54:24.782856Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b457e4e8b7ac5b5d81aab26fc61d5135566037f46ed63fb1083d2346b96aff80

Aliases

arxiv: 2107.00457 · arxiv_version: 2107.00457v1 · doi: 10.48550/arxiv.2107.00457 · pith_short_12: WRL6J2FXVRNV · pith_short_16: WRL6J2FXVRNV3ANK · pith_short_8: WRL6J2FX

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/WRL6J2FXVRNV3ANKWJX4MHKRGV \
  | 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: b457e4e8b7ac5b5d81aab26fc61d5135566037f46ed63fb1083d2346b96aff80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5ce78b6f87d0d0ad848dfd12c0903f5cc977cacda7e57e077db2a9fa986aa24",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-07-01T14:07:56Z",
    "title_canon_sha256": "d50a8b145e25451a84a9073e7411a37ff65debeff43bada12d3002dd37bf385c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.00457",
    "kind": "arxiv",
    "version": 1
  }
}