Pith Number

pith:7ADXCR4E

pith:2018:7ADXCR4ET3K72U427YZWSNXXIY

not attested not anchored not stored refs pending

On the fractional Dehn twist coefficients of branched coverings

Keiko Kawamuro, Tetsuya Ito

arxiv:1807.04398 v1 · 2018-07-12 · 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{7ADXCR4ET3K72U427YZWSNXXIY}

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	2026-05-18T00:10:53.638340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8077147849ed5fd539afe336936f7461d43a221b61d6d1c0f202ca5ef07032b

Aliases

arxiv: 1807.04398 · arxiv_version: 1807.04398v1 · doi: 10.48550/arxiv.1807.04398 · pith_short_12: 7ADXCR4ET3K7 · pith_short_16: 7ADXCR4ET3K72U42 · pith_short_8: 7ADXCR4E

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/7ADXCR4ET3K72U427YZWSNXXIY \
  | 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: f8077147849ed5fd539afe336936f7461d43a221b61d6d1c0f202ca5ef07032b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1478bfa2f708a654f48d276819f7418def899e88333d2abb505507a1ea129e8e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2018-07-12T02:10:32Z",
    "title_canon_sha256": "13dc67b33e2e90cf104503e20a6d7c5561f3d896bbdf953a905b2d96e30fd093"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04398",
    "kind": "arxiv",
    "version": 1
  }
}