Pith Number

pith:Q37YF5A2

pith:2018:Q37YF5A2EIZVZQGV75CKUMHCDB

not attested not anchored not stored refs pending

Null infinity, the BMS group and infrared issues

Abhay Ashtekar, Alok Laddha, Miguel Campiglia

arxiv:1808.07093 v2 · 2018-08-21 · gr-qc · hep-th · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q37YF5A2EIZVZQGV75CKUMHCDB}

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

5 papers in Pith

On symmetries of gravitational on-shell boundary action at null infinity

An algebra of proper observables at null infinity: Dirac brackets, Memory and Goldstone probes

Minimum lifetime of a black hole

Carrollian quantum states and flat space holography

Particle detector in a position-superposed black hole spacetime

Receipt and verification

First computed	2026-05-18T00:00:39.304647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86ff82f41a22335cc0d5ff44aa30e2187e07be53913564a7cefa00ddc3b98ace

Aliases

arxiv: 1808.07093 · arxiv_version: 1808.07093v2 · doi: 10.48550/arxiv.1808.07093 · pith_short_12: Q37YF5A2EIZV · pith_short_16: Q37YF5A2EIZVZQGV · pith_short_8: Q37YF5A2

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/Q37YF5A2EIZVZQGV75CKUMHCDB \
  | 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: 86ff82f41a22335cc0d5ff44aa30e2187e07be53913564a7cefa00ddc3b98ace

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de6e892cd8d9c78b7b245d654e3f09770ace52f77674f2e52489e9d1a5ed0c26",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-08-21T19:20:40Z",
    "title_canon_sha256": "d7dc3e71cbde829feeff88269e18ad0aae6859952f878ec985ce181d68911adf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07093",
    "kind": "arxiv",
    "version": 2
  }
}