Pith Number

pith:QO2M7SMD

pith:2015:QO2M7SMDH5TCKTDUNM4JSW24N7

not attested not anchored not stored refs pending

Free boundary problems for the diffusive competition system in higher dimension with sign-changing coefficients

Mingxin Wang, Yonggang Zhao

arxiv:1504.02580 v1 · 2015-04-10 · 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{QO2M7SMDH5TCKTDUNM4JSW24N7}

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	2026-05-18T02:19:07.310406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83b4cfc9833f66254c746b38995b5c6fecba73247f73f2740adcd4f544702fa2

Aliases

arxiv: 1504.02580 · arxiv_version: 1504.02580v1 · doi: 10.48550/arxiv.1504.02580 · pith_short_12: QO2M7SMDH5TC · pith_short_16: QO2M7SMDH5TCKTDU · pith_short_8: QO2M7SMD

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/QO2M7SMDH5TCKTDUNM4JSW24N7 \
  | 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: 83b4cfc9833f66254c746b38995b5c6fecba73247f73f2740adcd4f544702fa2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f23321025525c540818613c873fd9f211b65fb9b42c41d56701080d0bf48fad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-04-10T08:18:15Z",
    "title_canon_sha256": "5df142963197a650cf5e04dd9a29b16a139a7ba1b8406d5482c0597b9bc62a2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02580",
    "kind": "arxiv",
    "version": 1
  }
}