Pith Number

pith:B5COXDD3

pith:2017:B5COXDD3XTFCRRIF7O4R7HRXAE

not attested not anchored not stored refs pending

Positive subharmonic solutions to superlinear ODEs with indefinite weight

Guglielmo Feltrin

arxiv:1701.06145 v1 · 2017-01-22 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B5COXDD3XTFCRRIF7O4R7HRXAE}

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	2026-05-18T00:52:19.150425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f44eb8c7bbcca28c505fbb91f9e3701217d93d31d16ce17e36e28180aa1abb9

Aliases

arxiv: 1701.06145 · arxiv_version: 1701.06145v1 · doi: 10.48550/arxiv.1701.06145 · pith_short_12: B5COXDD3XTFC · pith_short_16: B5COXDD3XTFCRRIF · pith_short_8: B5COXDD3

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/B5COXDD3XTFCRRIF7O4R7HRXAE \
  | 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: 0f44eb8c7bbcca28c505fbb91f9e3701217d93d31d16ce17e36e28180aa1abb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b434b5a4e767f2d6ddefd973a6c84dedeb5fa46da77ad14c8fb6b1b770c4ff9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2017-01-22T10:00:02Z",
    "title_canon_sha256": "5cf773f4cbbe29d048bb4f4acd50c44df05b3f170576a85bf97b33d5849dc932"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.06145",
    "kind": "arxiv",
    "version": 1
  }
}