Pith Number

pith:RWZPZ4SN

pith:2009:RWZPZ4SNM2UHWE6DTVPE3K7RPP

not attested not anchored not stored refs pending

Systems of Hess-Appel'rot Type and Zhukovskii Property

Borislav Gajic, Bozidar Jovanovic, Vladimir Dragovic

arxiv:0912.1875 v1 · 2009-12-09 · math.DS · 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{RWZPZ4SNM2UHWE6DTVPE3K7RPP}

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	2026-05-18T02:10:25.057030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8db2fcf24d66a87b13c39d5e4dabf17bc398edccadd102467611dcf7e5e5c016

Aliases

arxiv: 0912.1875 · arxiv_version: 0912.1875v1 · doi: 10.48550/arxiv.0912.1875 · pith_short_12: RWZPZ4SNM2UH · pith_short_16: RWZPZ4SNM2UHWE6D · pith_short_8: RWZPZ4SN

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/RWZPZ4SNM2UHWE6DTVPE3K7RPP \
  | 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: 8db2fcf24d66a87b13c39d5e4dabf17bc398edccadd102467611dcf7e5e5c016

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "559f0b590388c5af98f32114bead948ad2c2fd79d5977425c6194b631a9bb447",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2009-12-09T22:34:08Z",
    "title_canon_sha256": "eb99d6c6b29556704c421c8f622cac157dcfd07904320edc609a4b1f44022c91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.1875",
    "kind": "arxiv",
    "version": 1
  }
}