Pith Number

pith:DPP7JVFX

pith:2018:DPP7JVFXHUVKHXDNJM6MXZ2HX5

not attested not anchored not stored refs pending

Improved bounds for rainbow numbers of matchings in plane triangulations

Yongtang Shi, Yongxin Lan, Zhongmei Qin

arxiv:1802.03918 v2 · 2018-02-12 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DPP7JVFXHUVKHXDNJM6MXZ2HX5}

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	2026-05-18T00:04:45.013511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1bdff4d4b73d2aa3dc6d4b3ccbe747bf774847064a9527de63ca29bca90b780b

Aliases

arxiv: 1802.03918 · arxiv_version: 1802.03918v2 · doi: 10.48550/arxiv.1802.03918 · pith_short_12: DPP7JVFXHUVK · pith_short_16: DPP7JVFXHUVKHXDN · pith_short_8: DPP7JVFX

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/DPP7JVFXHUVKHXDNJM6MXZ2HX5 \
  | 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: 1bdff4d4b73d2aa3dc6d4b3ccbe747bf774847064a9527de63ca29bca90b780b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "134a3862509c0891c4edbb9f570e8cb7a11234f99b3b9e653f494b6b118ae665",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-02-12T07:24:27Z",
    "title_canon_sha256": "8ce0decc5eafdebaf4b7520cbbb4bd292ba32d722926032f7fd02027fdbddc8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03918",
    "kind": "arxiv",
    "version": 2
  }
}