Pith Number

pith:QNYZFF4Y

pith:2014:QNYZFF4YFZOH2RIGWSPVVBMMC6

not attested not anchored not stored refs pending

Cylindrical contact homology for dynamically convex contact forms in three dimensions

Jo Nelson, Michael Hutchings

arxiv:1407.2898 v3 · 2014-07-10 · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QNYZFF4YFZOH2RIGWSPVVBMMC6}

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	2026-05-18T01:11:08.763270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83719297982e5c7d4506b49f5a858c179145c4e8787d2cdb4b25cd5a1fe5500e

Aliases

arxiv: 1407.2898 · arxiv_version: 1407.2898v3 · doi: 10.48550/arxiv.1407.2898 · pith_short_12: QNYZFF4YFZOH · pith_short_16: QNYZFF4YFZOH2RIG · pith_short_8: QNYZFF4Y

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/QNYZFF4YFZOH2RIGWSPVVBMMC6 \
  | 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: 83719297982e5c7d4506b49f5a858c179145c4e8787d2cdb4b25cd5a1fe5500e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28b26107959ef8f5763cfae8657639573dd1119250d2a7b75db720b4d3204fce",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2014-07-10T18:36:08Z",
    "title_canon_sha256": "3f370c5e09d58910665e94432bd12fcc14c0b78dc2d3c3500cb469ab020cf393"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.2898",
    "kind": "arxiv",
    "version": 3
  }
}