Pith Number

pith:3643XHHR

pith:2017:3643XHHRUF5SLUH52QSMY4F7RQ

not attested not anchored not stored refs pending

Spin foam propagator: A new perspective to include a cosmological constant

Antonia Zipfel, Muxin Han, Zichang Huang

arxiv:1711.11162 v2 · 2017-11-30 · 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{3643XHHRUF5SLUH52QSMY4F7RQ}

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	2026-05-18T00:16:30.102702Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfb9bb9cf1a17b25d0fdd424cc70bf8c2bad2aaa3fb4f6b2d82e09f5f1421651

Aliases

arxiv: 1711.11162 · arxiv_version: 1711.11162v2 · doi: 10.48550/arxiv.1711.11162 · pith_short_12: 3643XHHRUF5S · pith_short_16: 3643XHHRUF5SLUH5 · pith_short_8: 3643XHHR

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/3643XHHRUF5SLUH52QSMY4F7RQ \
  | 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: dfb9bb9cf1a17b25d0fdd424cc70bf8c2bad2aaa3fb4f6b2d82e09f5f1421651

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32e18ce61193a10a8a3b06ccde9be2e6261155d8fd4b447de725a541b37d9a84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-11-30T00:01:16Z",
    "title_canon_sha256": "595a27be3eceadc80c82f7e499050ade6521abe415522e0fa58c1c2e449d7e56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.11162",
    "kind": "arxiv",
    "version": 2
  }
}