Pith Number

pith:MNQNFJL2

pith:2017:MNQNFJL2CBMV2NYU6SK7GCTGWY

not attested not anchored not stored refs pending

A $\frac{3}{2}$-Approximation Algorithm for Tree Augmentation via Chv\'atal-Gomory Cuts

Jochen K\"onemann, Laura Sanit\`a, Martin Gro{\ss}, Samuel Fiorini

arxiv:1702.05567 v2 · 2017-02-18 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MNQNFJL2CBMV2NYU6SK7GCTGWY}

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	2026-05-18T00:50:03.705569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6360d2a57a10595d3714f495f30a66b6396a418395ada4eb99da3ef9a608aa4e

Aliases

arxiv: 1702.05567 · arxiv_version: 1702.05567v2 · doi: 10.48550/arxiv.1702.05567 · pith_short_12: MNQNFJL2CBMV · pith_short_16: MNQNFJL2CBMV2NYU · pith_short_8: MNQNFJL2

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/MNQNFJL2CBMV2NYU6SK7GCTGWY \
  | 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: 6360d2a57a10595d3714f495f30a66b6396a418395ada4eb99da3ef9a608aa4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3ca64be22758db72c16a2cb14639b6c89074773ce8e08cdf4ac3fbc759f73d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-02-18T03:46:55Z",
    "title_canon_sha256": "f7e6c03e8c6456ea870aa68fb8df65fb91b0c916db1e0cfeb84cce07f62f1845"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.05567",
    "kind": "arxiv",
    "version": 2
  }
}