Pith Number

pith:DOH2BRCH

pith:2018:DOH2BRCHEDECEMX7FTHGQLL3L5

not attested not anchored not stored refs pending

Rational homology balls in $2$-handlebodies

Dongsoo Shin, Heesang Park

arxiv:1803.05781 v1 · 2018-03-15 · 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{DOH2BRCHEDECEMX7FTHGQLL3L5}

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	2026-05-18T00:20:54.691523Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b8fa0c44720c82232ff2cce682d7b5f6413b06be32960797c739aeee0e1ecf4

Aliases

arxiv: 1803.05781 · arxiv_version: 1803.05781v1 · doi: 10.48550/arxiv.1803.05781 · pith_short_12: DOH2BRCHEDEC · pith_short_16: DOH2BRCHEDECEMX7 · pith_short_8: DOH2BRCH

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/DOH2BRCHEDECEMX7FTHGQLL3L5 \
  | 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: 1b8fa0c44720c82232ff2cce682d7b5f6413b06be32960797c739aeee0e1ecf4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5da70791ca46b0ac6b4226d0fb8208838934cd8020d400c6908482c14899dbb8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2018-03-15T14:37:08Z",
    "title_canon_sha256": "d958b724f39e2e83520173f89220ab6279daa0bc5afc563ebfab220d3d8ccc1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.05781",
    "kind": "arxiv",
    "version": 1
  }
}