Pith Number

pith:OXBIK22Q

pith:2016:OXBIK22QQIYPUBJX4ORXJDCMFW

not attested not anchored not stored refs pending

How many hypersurfaces does it take to cut out a Segre class?

Paolo Aluffi

arxiv:1605.00012 v2 · 2016-04-29 · 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{OXBIK22QQIYPUBJX4ORXJDCMFW}

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	2026-05-18T01:02:12.842104Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75c2856b508230fa0537e3a3748c4c2d9e8347671cbaf2c697f90abb05f6ae75

Aliases

arxiv: 1605.00012 · arxiv_version: 1605.00012v2 · doi: 10.48550/arxiv.1605.00012 · pith_short_12: OXBIK22QQIYP · pith_short_16: OXBIK22QQIYPUBJX · pith_short_8: OXBIK22Q

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/OXBIK22QQIYPUBJX4ORXJDCMFW \
  | 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: 75c2856b508230fa0537e3a3748c4c2d9e8347671cbaf2c697f90abb05f6ae75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bceeb745921c9aa78286bd0cde40fe40e37405fa549a468400dec7af98f87db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-04-29T20:00:37Z",
    "title_canon_sha256": "18a4abec58029414c2b44cda0df78dd624ef21037144ca285a9332203271c259"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.00012",
    "kind": "arxiv",
    "version": 2
  }
}