Pith Number

pith:4RDU3IEY

pith:2019:4RDU3IEYOYOVG5AMBHWCRAGV6U

not attested not anchored not stored refs pending

Simply connected Sasaki-Einstein rational homology 5-spheres

Jihun Park, Joonyeong Won

arxiv:1905.13304 v1 · 2019-05-30 · math.DG · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4RDU3IEYOYOVG5AMBHWCRAGV6U}

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	2026-05-17T23:44:35.369302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4474da098761d53740c09ec2880d5f510e45d05c7e6e1d5aa000f685aa36af5

Aliases

arxiv: 1905.13304 · arxiv_version: 1905.13304v1 · doi: 10.48550/arxiv.1905.13304 · pith_short_12: 4RDU3IEYOYOV · pith_short_16: 4RDU3IEYOYOVG5AM · pith_short_8: 4RDU3IEY

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/4RDU3IEYOYOVG5AMBHWCRAGV6U \
  | 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: e4474da098761d53740c09ec2880d5f510e45d05c7e6e1d5aa000f685aa36af5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a2b0aeda6880973aac35d14e9c21c19b1825bf8c9a431f414d979f532d2e685",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-05-30T20:54:07Z",
    "title_canon_sha256": "a3e787699f06702b420aed3ad3121df748a97a8e0be037f9339f8354f2c5357e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.13304",
    "kind": "arxiv",
    "version": 1
  }
}