Pith Number

pith:MYEKHQH5

pith:2009:MYEKHQH5CTYPRG2UWMXUARGRO2

not attested not anchored not stored refs pending

(Broken) Gauge Symmetries and Constraints in Regge Calculus

Benjamin Bahr, Bianca Dittrich

arxiv:0905.1670 v1 · 2009-05-11 · 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{MYEKHQH5CTYPRG2UWMXUARGRO2}

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	2026-07-04T17:17:42.696299Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6608a3c0fd14f0f89b54b32f4044d176ab4dec1f5f54abdd304ca1f959ce3b29

Aliases

arxiv: 0905.1670 · arxiv_version: 0905.1670v1 · doi: 10.48550/arxiv.0905.1670 · pith_short_12: MYEKHQH5CTYP · pith_short_16: MYEKHQH5CTYPRG2U · pith_short_8: MYEKHQH5

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/MYEKHQH5CTYPRG2UWMXUARGRO2 \
  | 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: 6608a3c0fd14f0f89b54b32f4044d176ab4dec1f5f54abdd304ca1f959ce3b29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "059cd5eadd2cb0cb4a4ce491303b8c17b945462ca10807906c2458913696c721",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-05-11T18:37:32Z",
    "title_canon_sha256": "d0feddf673d6f5de873fad4198765fe5afb06a98b01adde046a6b4e58430b4e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1670",
    "kind": "arxiv",
    "version": 1
  }
}