Pith Number

pith:FZXW7YZB

pith:2015:FZXW7YZBKDUH74BKPM5NGNLTCM

not attested not anchored not stored refs pending

A structural approach to kernels for ILPs: Treewidth and Total Unimodularity

Bart M. P. Jansen, Stefan Kratsch

arxiv:1506.07729 v1 · 2015-06-25 · cs.CC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FZXW7YZBKDUH74BKPM5NGNLTCM}

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	2026-05-18T01:38:51.032179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e6f6fe32150e87ff02a7b3ad33573133a5ad619c5b1f9ecffa74fd9aa29d6b4

Aliases

arxiv: 1506.07729 · arxiv_version: 1506.07729v1 · doi: 10.48550/arxiv.1506.07729 · pith_short_12: FZXW7YZBKDUH · pith_short_16: FZXW7YZBKDUH74BK · pith_short_8: FZXW7YZB

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/FZXW7YZBKDUH74BKPM5NGNLTCM \
  | 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: 2e6f6fe32150e87ff02a7b3ad33573133a5ad619c5b1f9ecffa74fd9aa29d6b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5f7c6fd782c70d7a186bba00b6b60701b18087f187c95b7ac22c349fd33104c",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-06-25T12:47:56Z",
    "title_canon_sha256": "75f11d73aa194e66802d29b1b0c45367706440a49c5a8d68da7af55b60b8d59d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.07729",
    "kind": "arxiv",
    "version": 1
  }
}