Pith Number

pith:KOGYHR2U

pith:1995:KOGYHR2U5G3RZFONA7XYOKHMJ2

not attested not anchored not stored refs pending

Some applications of differential topology in general relativity

Andrew Chamblin (DAMTP, Cambridge)

arxiv:gr-qc/9509048 v1 · 1995-09-25 · 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{KOGYHR2U5G3RZFONA7XYOKHMJ2}

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	2026-05-18T01:39:19.512806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

538d83c754e9b71c95cd07ef8728ec4eac9e506f1db4251865434cb2b4a1bcc3

Aliases

arxiv: gr-qc/9509048 · arxiv_version: gr-qc/9509048v1 · doi: 10.48550/arxiv.gr-qc/9509048 · pith_short_12: KOGYHR2U5G3R · pith_short_16: KOGYHR2U5G3RZFON · pith_short_8: KOGYHR2U

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/KOGYHR2U5G3RZFONA7XYOKHMJ2 \
  | 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: 538d83c754e9b71c95cd07ef8728ec4eac9e506f1db4251865434cb2b4a1bcc3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "473e85cbf8843c194277aa8fa58c38acc0b6c8b9aaf67c4933ec992d567c47b4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1995-09-25T21:18:16Z",
    "title_canon_sha256": "29a891b6d4e2b3102c105a288a56487db2b3bc2cd7eed6eeee8b17ad024b5622"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9509048",
    "kind": "arxiv",
    "version": 1
  }
}