Pith Number

pith:MYAFB6M7

pith:2011:MYAFB6M7QSGV7UI6VMNDM7A7I2

not attested not anchored not stored refs pending

The Poincare homology sphere and almost simple knots in lens spaces

Kenneth L. Baker

arxiv:1111.6877 v1 · 2011-11-29 · 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{MYAFB6M7QSGV7UI6VMNDM7A7I2}

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	2026-05-18T04:07:28.348408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

660050f99f848d5fd11eab1a367c1f46a8038211865aae1a497d9aedcfde5fe0

Aliases

arxiv: 1111.6877 · arxiv_version: 1111.6877v1 · doi: 10.48550/arxiv.1111.6877 · pith_short_12: MYAFB6M7QSGV · pith_short_16: MYAFB6M7QSGV7UI6 · pith_short_8: MYAFB6M7

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/MYAFB6M7QSGV7UI6VMNDM7A7I2 \
  | 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: 660050f99f848d5fd11eab1a367c1f46a8038211865aae1a497d9aedcfde5fe0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "944040353c7ef4ef513b93aa8f9503faa952244de4563230d19669119004e032",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2011-11-29T16:26:57Z",
    "title_canon_sha256": "cf5a66723d5873207a31105010c6b7be9bb91fb67a4ba90fa40ba930ef932ea6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.6877",
    "kind": "arxiv",
    "version": 1
  }
}