Pith Number

pith:QEF4HFZH

pith:2015:QEF4HFZHSHTYBD23NYL5Z2ZA27

not attested not anchored not stored refs pending

Incidence stratifications on Hilbert schemes of smooth surfaces, and an application to Poisson structures

Ziv Ran

arxiv:1502.00553 v2 · 2015-02-02 · 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{QEF4HFZHSHTYBD23NYL5Z2ZA27}

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	2026-05-18T01:26:31.707539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

810bc3972791e7808f5b6e17dceb20d7f915fb9d8bacd5a4885645e2d07c240c

Aliases

arxiv: 1502.00553 · arxiv_version: 1502.00553v2 · doi: 10.48550/arxiv.1502.00553 · pith_short_12: QEF4HFZHSHTY · pith_short_16: QEF4HFZHSHTYBD23 · pith_short_8: QEF4HFZH

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/QEF4HFZHSHTYBD23NYL5Z2ZA27 \
  | 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: 810bc3972791e7808f5b6e17dceb20d7f915fb9d8bacd5a4885645e2d07c240c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65732847d99acac391c1785953840594a6a518ee82f4ebec26198f1bd9fdd759",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-02-02T17:12:35Z",
    "title_canon_sha256": "ef780cd73e62550ae1ed506044f9cd64b963411b74d592b85263f38e39d6624c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00553",
    "kind": "arxiv",
    "version": 2
  }
}