Pith Number

pith:NYDWAT4U

pith:2017:NYDWAT4U7GCTOLXEQJHV5YYCKG

not attested not anchored not stored refs pending

Curvature properties of Robinson-Trautman metric

Absos Ali Shaikh, Musavvir Ali, Zafar Ahsan

arxiv:1701.06136 v1 · 2017-01-22 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NYDWAT4U7GCTOLXEQJHV5YYCKG}

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	2026-05-18T00:52:19.185718Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e07604f94f985372ee4824f5ee30251b14259639d7c0fae6c7a8d77418bf913

Aliases

arxiv: 1701.06136 · arxiv_version: 1701.06136v1 · doi: 10.48550/arxiv.1701.06136 · pith_short_12: NYDWAT4U7GCT · pith_short_16: NYDWAT4U7GCTOLXE · pith_short_8: NYDWAT4U

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/NYDWAT4U7GCTOLXEQJHV5YYCKG \
  | 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: 6e07604f94f985372ee4824f5ee30251b14259639d7c0fae6c7a8d77418bf913

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bc2d1fec971c8361ab483e72cce215db5db8466bcecd2360f234cd5349ee1e1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-01-22T07:57:53Z",
    "title_canon_sha256": "df9bdefdcdabd777983633c0764bb9e709832cdff952b43acf4beacafa10ee79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.06136",
    "kind": "arxiv",
    "version": 1
  }
}