Pith Number

pith:JWSCR65U

pith:2012:JWSCR65UW3LCZD6ABNGNPCN54N

not attested not anchored not stored refs pending

On a class of singular second-order Hamiltonian systems with infinitely many homoclinic solutions

David G. Costa, Hossein Tehrani

arxiv:1211.6779 v1 · 2012-11-28 · math.CA · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JWSCR65UW3LCZD6ABNGNPCN54N}

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	2026-05-18T03:39:43.028007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4da428fbb4b6d62c8fc00b4cd789bde35435484d9e4dd4e811c7062079085adc

Aliases

arxiv: 1211.6779 · arxiv_version: 1211.6779v1 · doi: 10.48550/arxiv.1211.6779 · pith_short_12: JWSCR65UW3LC · pith_short_16: JWSCR65UW3LCZD6A · pith_short_8: JWSCR65U

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/JWSCR65UW3LCZD6ABNGNPCN54N \
  | 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: 4da428fbb4b6d62c8fc00b4cd789bde35435484d9e4dd4e811c7062079085adc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "985b7d0be8ba195cb4f30bda060152f700aefd56e1f36e9e07f305a729e0822f",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2012-11-28T23:08:11Z",
    "title_canon_sha256": "07d1bd789b65ed9a182d5414ce4e039c69fe7f0f20fe00e45a71d63a55990adf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.6779",
    "kind": "arxiv",
    "version": 1
  }
}