Pith Number

pith:VHQCUV5H

pith:2009:VHQCUV5H4UZY7UVZMCU37YFR7U

not attested not anchored not stored refs pending

Some results on homoclinic and heteroclinic connections in planar systems

Armengol Gasull, Hector Giacomini, Joan Torregrosa

arxiv:0912.3490 v1 · 2009-12-17 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VHQCUV5H4UZY7UVZMCU37YFR7U}

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	2026-05-18T02:10:15.877157Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9e02a57a7e5338fd2b960a9bfe0b1fd0321bb601613c0a68d2ea0976844b300

Aliases

arxiv: 0912.3490 · arxiv_version: 0912.3490v1 · doi: 10.48550/arxiv.0912.3490 · pith_short_12: VHQCUV5H4UZY · pith_short_16: VHQCUV5H4UZY7UVZ · pith_short_8: VHQCUV5H

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/VHQCUV5H4UZY7UVZMCU37YFR7U \
  | 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: a9e02a57a7e5338fd2b960a9bfe0b1fd0321bb601613c0a68d2ea0976844b300

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44366e94ab3394fc81f40c243a331a9d4b59542338a9dc8e4a60d3ed9b49e4ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2009-12-17T18:53:35Z",
    "title_canon_sha256": "877b3ee4da4798f065eca5e5e256182a48926f9b9745413beb13ef2893a88fe6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3490",
    "kind": "arxiv",
    "version": 1
  }
}