Pith Number

pith:7FOKRXR2

pith:2011:7FOKRXR2VTKUVT6SXNLFSTCKI6

not attested not anchored not stored refs pending

Action of the cork twist on Floer homology

Cagri Karakurt, Selman Akbulut

arxiv:1104.2247 v1 · 2011-04-12 · 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{7FOKRXR2VTKUVT6SXNLFSTCKI6}

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	2026-05-18T02:28:55.520701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f95ca8de3aacd54acfd2bb56594c4a47a0200b481320545ae2f898b6e939c398

Aliases

arxiv: 1104.2247 · arxiv_version: 1104.2247v1 · doi: 10.48550/arxiv.1104.2247 · pith_short_12: 7FOKRXR2VTKU · pith_short_16: 7FOKRXR2VTKUVT6S · pith_short_8: 7FOKRXR2

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/7FOKRXR2VTKUVT6SXNLFSTCKI6 \
  | 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: f95ca8de3aacd54acfd2bb56594c4a47a0200b481320545ae2f898b6e939c398

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e26a1d519215c25183df2c1fa247839f33650661d1039b7ff1403bf62003975",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2011-04-12T15:38:17Z",
    "title_canon_sha256": "c000c91489c850a77edb5a8bd1687103e291ea5eae00cd1d3f286015c8d044af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2247",
    "kind": "arxiv",
    "version": 1
  }
}