Pith Number

pith:EF2VEWWK

pith:2012:EF2VEWWKMLEIAA5M4ZLFYH2SHJ

not attested not anchored not stored refs pending

Invariant Forms for Correspondences of Curves

Arnab Saha

arxiv:1203.1108 v1 · 2012-03-06 · 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{EF2VEWWKMLEIAA5M4ZLFYH2SHJ}

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	2026-05-18T04:00:48.772933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2175525aca62c88003ace6565c1f523a78d6ad59f359ade2cebc9f0d746aed7b

Aliases

arxiv: 1203.1108 · arxiv_version: 1203.1108v1 · doi: 10.48550/arxiv.1203.1108 · pith_short_12: EF2VEWWKMLEI · pith_short_16: EF2VEWWKMLEIAA5M · pith_short_8: EF2VEWWK

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/EF2VEWWKMLEIAA5M4ZLFYH2SHJ \
  | 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: 2175525aca62c88003ace6565c1f523a78d6ad59f359ade2cebc9f0d746aed7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c96799110bcb4b391514370fbbff1584a8b6328ac970bfb2f291dd69cbb31f4b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-03-06T06:41:09Z",
    "title_canon_sha256": "975d5aca224e94537dd8ca822b21c0f0893a77039676d845fad703074436fb87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1108",
    "kind": "arxiv",
    "version": 1
  }
}