Pith Number

pith:NNG3O7A2

pith:2009:NNG3O7A2PYGVGFEOFAPHFS2M4T

not attested not anchored not stored refs pending

Symplectic Origami

A. Cannas da Silva, A. R. Pires, V. Guillemin

arxiv:0909.4065 v2 · 2009-09-22 · math.SG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNG3O7A2PYGVGFEOFAPHFS2M4T}

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.

Cited by

1 paper in Pith

Chern Characteristics and Todd-Hirzebruch Identities for Transpolar Pairs of Toric Spaces

Receipt and verification

First computed	2026-05-18T01:00:40.971725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b4db77c1a7e0d53148e281e72cb4ce4c60a13fcdb36bb41a4b9449eb2e93ff5

Aliases

arxiv: 0909.4065 · arxiv_version: 0909.4065v2 · doi: 10.48550/arxiv.0909.4065 · pith_short_12: NNG3O7A2PYGV · pith_short_16: NNG3O7A2PYGVGFEO · pith_short_8: NNG3O7A2

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/NNG3O7A2PYGVGFEOFAPHFS2M4T \
  | 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: 6b4db77c1a7e0d53148e281e72cb4ce4c60a13fcdb36bb41a4b9449eb2e93ff5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d4280746e3621b541bcc6190c1a3ca141e3e35e6ae9f8eb18882167d3bd22a3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2009-09-22T18:59:31Z",
    "title_canon_sha256": "3f425293ff8c743520d79ce833841943d26103cad43cae188c392ae73503e377"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4065",
    "kind": "arxiv",
    "version": 2
  }
}