Pith Number

pith:MKACUL4L

pith:2011:MKACUL4LTA7IRA6SCHKAINEAZO

not attested not anchored not stored refs pending

Cohomology of the hyperelliptic Torelli group

Dan Margalit, Leah Childers, Tara Brendle

arxiv:1110.0448 v1 · 2011-10-03 · math.GT · 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{MKACUL4LTA7IRA6SCHKAINEAZO}

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	2026-05-18T04:11:49.911698Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62802a2f8b983e8883d211d4043480cbbdbddfd45911a182b5f7c424025436b7

Aliases

arxiv: 1110.0448 · arxiv_version: 1110.0448v1 · doi: 10.48550/arxiv.1110.0448 · pith_short_12: MKACUL4LTA7I · pith_short_16: MKACUL4LTA7IRA6S · pith_short_8: MKACUL4L

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/MKACUL4LTA7IRA6SCHKAINEAZO \
  | 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: 62802a2f8b983e8883d211d4043480cbbdbddfd45911a182b5f7c424025436b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b858038845998e664f219cff8f0cf99418d0b684860a8d18ff54c82c4ad9d6dd",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2011-10-03T19:23:25Z",
    "title_canon_sha256": "e7878b4f3478734564773c92b6727b4745719570fdaa1d64073b3887bfecf8a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.0448",
    "kind": "arxiv",
    "version": 1
  }
}