Pith Number

pith:CI7DYFFH

pith:2009:CI7DYFFHU6R2DR3WD637LQSU64

not attested not anchored not stored refs pending

A discrete analogue of the modified Novikov-Veselov hierarchy

Dmitry Zakharov

arxiv:0904.3728 v2 · 2009-04-23 · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CI7DYFFHU6R2DR3WD637LQSU64}

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	2026-05-18T03:53:32.104740Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

123e3c14a7a7a3a1c7761fb7f5c254f70a40d23b2d5f037a0063ed6a12bad38e

Aliases

arxiv: 0904.3728 · arxiv_version: 0904.3728v2 · doi: 10.48550/arxiv.0904.3728 · pith_short_12: CI7DYFFHU6R2 · pith_short_16: CI7DYFFHU6R2DR3W · pith_short_8: CI7DYFFH

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/CI7DYFFHU6R2DR3WD637LQSU64 \
  | 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: 123e3c14a7a7a3a1c7761fb7f5c254f70a40d23b2d5f037a0063ed6a12bad38e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88e15e14ec3a23fafe5848af575763a3fa456dabec15037781f294df5bab05ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2009-04-23T16:15:58Z",
    "title_canon_sha256": "25216d55a4cc4ff8b30fbe99c4c59b29b28b0e71e41f30bf6c81491fbaaa928d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3728",
    "kind": "arxiv",
    "version": 2
  }
}