Pith Number

pith:RQUWE5BY

pith:1996:RQUWE5BY2NPNBVIPAVAUETHOHF

not attested not anchored not stored refs pending

Contractible open 3-manifolds which non-trivially cover only non-compact 3-manifolds

Robert Myers

arxiv:math/9606225 v1 · 1996-06-24 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RQUWE5BY2NPNBVIPAVAUETHOHF}

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	2026-05-18T01:05:47.274714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c29627438d35ed0d50f0541424cee39563e7f3bb9c7964749c47c31b0b44872

Aliases

arxiv: math/9606225 · arxiv_version: math/9606225v1 · doi: 10.48550/arxiv.math/9606225 · pith_short_12: RQUWE5BY2NPN · pith_short_16: RQUWE5BY2NPNBVIP · pith_short_8: RQUWE5BY

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/RQUWE5BY2NPNBVIPAVAUETHOHF \
  | 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: 8c29627438d35ed0d50f0541424cee39563e7f3bb9c7964749c47c31b0b44872

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "756f5cad84311300a731c52090c9d684ad147a500a059aed91e70f141e9ca13b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "1996-06-24T00:00:00Z",
    "title_canon_sha256": "1434fbf4c353db4b96f2a215572e739529a7cf126eca130bdc3b6f36a216f1bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9606225",
    "kind": "arxiv",
    "version": 1
  }
}