Pith Number

pith:BULBD3RJ

pith:2017:BULBD3RJK5G5RMKO6NZN6VAVGN

not attested not anchored not stored refs pending

(2+1) Regge Calculus: Discrete Curvatures, Bianchi Identity, and Gauss-Codazzi Equation

Freddy P. Zen, Seramika Ariwahjoedi

arxiv:1709.08373 v1 · 2017-09-25 · 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{BULBD3RJK5G5RMKO6NZN6VAVGN}

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	2026-05-18T00:34:25.768405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d1611ee29574dd8b14ef372df541533590994b01b9564c87bd9e3f78abaa946

Aliases

arxiv: 1709.08373 · arxiv_version: 1709.08373v1 · doi: 10.48550/arxiv.1709.08373 · pith_short_12: BULBD3RJK5G5 · pith_short_16: BULBD3RJK5G5RMKO · pith_short_8: BULBD3RJ

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/BULBD3RJK5G5RMKO6NZN6VAVGN \
  | 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: 0d1611ee29574dd8b14ef372df541533590994b01b9564c87bd9e3f78abaa946

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9261b12bb4ca78031339dc382c4b94e46a204e8b124f98c1e35c72b2ec9ee1bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-09-25T08:38:29Z",
    "title_canon_sha256": "264664d7c61447cf69c333846d15de6ecfd987473a4a44374467f7238431b406"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.08373",
    "kind": "arxiv",
    "version": 1
  }
}