Pith Number

pith:3XQFYKIR

pith:2019:3XQFYKIRW56DXZXJSMH5DN6FEN

not attested not anchored not stored refs pending

Characterisation of homotopy ribbon discs

Anthony Conway, Mark Powell

arxiv:1902.05321 v4 · 2019-02-14 · 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{3XQFYKIRW56DXZXJSMH5DN6FEN}

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.

Cited by

1 paper in Pith

Embedded surfaces with infinite cyclic knot group

Receipt and verification

First computed	2026-07-05T06:32:30.413950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dde05c2911b77c3be6e9930fd1b7c523475fdb12310dc76a8919204d43885c1e

Aliases

arxiv: 1902.05321 · arxiv_version: 1902.05321v4 · doi: 10.48550/arxiv.1902.05321 · pith_short_12: 3XQFYKIRW56D · pith_short_16: 3XQFYKIRW56DXZXJ · pith_short_8: 3XQFYKIR

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/3XQFYKIRW56DXZXJSMH5DN6FEN \
  | 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: dde05c2911b77c3be6e9930fd1b7c523475fdb12310dc76a8919204d43885c1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bde86352bbe98dabca7ae4322d9c40e9c7f48daa9df97a781669c7634ff3aa98",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2019-02-14T12:09:15Z",
    "title_canon_sha256": "18c8e74dbec841588e626dcc4a0c4b48428e777f275fc8cefaff11900de4d772"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.05321",
    "kind": "arxiv",
    "version": 4
  }
}