Pith Number

pith:5IHSEH3J

pith:2011:5IHSEH3JNHGNHARM6M2BQTLEZB

not attested not anchored not stored refs pending

A Pair of Quasi-Inverse Functors for an Extension of Perverse Sheaves

Delphine Dupont

arxiv:1103.4254 v1 · 2011-03-22 · 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{5IHSEH3JNHGNHARM6M2BQTLEZB}

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	2026-05-18T04:26:21.283683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea0f221f6969ccd3822cf334184d64c878ae152a19ef6f0506f70a185c4862f6

Aliases

arxiv: 1103.4254 · arxiv_version: 1103.4254v1 · doi: 10.48550/arxiv.1103.4254 · pith_short_12: 5IHSEH3JNHGN · pith_short_16: 5IHSEH3JNHGNHARM · pith_short_8: 5IHSEH3J

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/5IHSEH3JNHGNHARM6M2BQTLEZB \
  | 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: ea0f221f6969ccd3822cf334184d64c878ae152a19ef6f0506f70a185c4862f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7add8aa199ca37fbba858b85feff90e178fb6e44466e37aa076a10d033f03a27",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-03-22T12:22:07Z",
    "title_canon_sha256": "8dfde5764493176ff864fd2aae5187e48a782f44a44d1a9f23d3b9ae0c79fd11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.4254",
    "kind": "arxiv",
    "version": 1
  }
}