Pith Number

pith:XGM26TXQ

pith:2019:XGM26TXQCODXZHSCO6FVNYHDW2

not attested not anchored not stored refs pending

Decomposable polymatroids and connections with graph coloring

Carolyn Chun, Joseph E. Bonin

arxiv:1908.09030 v1 · 2019-08-23 · 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{XGM26TXQCODXZHSCO6FVNYHDW2}

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	2026-07-05T08:52:20.958343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b999af4ef013877c9e42778b56e0e3b692e1194a227a0b7a662ac4568e1c2ac3

Aliases

arxiv: 1908.09030 · arxiv_version: 1908.09030v1 · doi: 10.48550/arxiv.1908.09030 · pith_short_12: XGM26TXQCODX · pith_short_16: XGM26TXQCODXZHSC · pith_short_8: XGM26TXQ

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/XGM26TXQCODXZHSCO6FVNYHDW2 \
  | 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: b999af4ef013877c9e42778b56e0e3b692e1194a227a0b7a662ac4568e1c2ac3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f604f546f2ec30d89f083ca0e9739199434e6456c76e589f928513208d098045",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-08-23T20:31:47Z",
    "title_canon_sha256": "149a7c31899b09e8b1f43767083f2b91d0a90cd88595a58ec62e030a96a5303c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09030",
    "kind": "arxiv",
    "version": 1
  }
}