Pith Number

pith:7DDZX2YA

pith:2011:7DDZX2YA7KGJMVURA6O3HNU5P4

not attested not anchored not stored refs pending

On extensions of the Torelli map

Angela Gibney

arxiv:1104.3788 v1 · 2011-04-19 · 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{7DDZX2YA7KGJMVURA6O3HNU5P4}

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	2026-05-18T02:22:02.142862Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8c79beb00fa8c965691079db3b69d7f0d0c233eb19bdefd958e51703bd82fb3

Aliases

arxiv: 1104.3788 · arxiv_version: 1104.3788v1 · doi: 10.48550/arxiv.1104.3788 · pith_short_12: 7DDZX2YA7KGJ · pith_short_16: 7DDZX2YA7KGJMVUR · pith_short_8: 7DDZX2YA

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/7DDZX2YA7KGJMVURA6O3HNU5P4 \
  | 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: f8c79beb00fa8c965691079db3b69d7f0d0c233eb19bdefd958e51703bd82fb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b030aaf1580d26f67e3c5e09268f365688500e5abfa9cb8df4b4b3691833a4c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-04-19T16:05:34Z",
    "title_canon_sha256": "39a012f25adb0cdea50a4f3a4c0dbeb94a3e458781376f7a12a4fa0ab15d1e85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3788",
    "kind": "arxiv",
    "version": 1
  }
}