Pith Number

pith:DOIASQ67

pith:2017:DOIASQ67FHB4P7I6AUIX6OFOZG

not attested not anchored not stored refs pending

An indefinite nonlinear problem in population dynamics: high multiplicity of positive solutions

Elisa Sovrano, Guglielmo Feltrin

arxiv:1712.03352 v1 · 2017-12-09 · 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{DOIASQ67FHB4P7I6AUIX6OFOZG}

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	2026-05-18T00:08:15.722693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b900943df29c3c7fd1e05117f38aec9865e290bd705922f2dad14340450c5fc

Aliases

arxiv: 1712.03352 · arxiv_version: 1712.03352v1 · doi: 10.48550/arxiv.1712.03352 · pith_short_12: DOIASQ67FHB4 · pith_short_16: DOIASQ67FHB4P7I6 · pith_short_8: DOIASQ67

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/DOIASQ67FHB4P7I6AUIX6OFOZG \
  | 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: 1b900943df29c3c7fd1e05117f38aec9865e290bd705922f2dad14340450c5fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b22f8e564b6b39bd66d45a5f7dee69ef3d2f7e702194323743f2bfe981c5b87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2017-12-09T08:00:02Z",
    "title_canon_sha256": "8c7f26b5ca3440295fab20e95f30a65a9441a727126404bbe412f9f33b886d6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.03352",
    "kind": "arxiv",
    "version": 1
  }
}