Pith Number

pith:7WXA3X4G

pith:2018:7WXA3X4GQAYCXA6VZQXASGNABX

not attested not anchored not stored refs pending

An explicit correspondence of modular curves

Imin Chen, Parinaz Salari Sharif

arxiv:1801.04020 v1 · 2018-01-11 · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7WXA3X4GQAYCXA6VZQXASGNABX}

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	2026-05-18T00:26:12.123958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdae0ddf8680302b83d5cc2e0919a00dc15f983bbd7687a7096db21183f30d4e

Aliases

arxiv: 1801.04020 · arxiv_version: 1801.04020v1 · doi: 10.48550/arxiv.1801.04020 · pith_short_12: 7WXA3X4GQAYC · pith_short_16: 7WXA3X4GQAYCXA6V · pith_short_8: 7WXA3X4G

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/7WXA3X4GQAYCXA6VZQXASGNABX \
  | 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: fdae0ddf8680302b83d5cc2e0919a00dc15f983bbd7687a7096db21183f30d4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccdf32f76f2adcdc9c2fb24682c6c25cf3bf4281d537524c2f6598a28287f2f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2018-01-11T23:48:35Z",
    "title_canon_sha256": "796ce4b12990e9e1db13d1da0f7027e7fe471681f3e17e4012dfe8584791f329"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04020",
    "kind": "arxiv",
    "version": 1
  }
}