Pith Number

pith:L46OSZ5H

pith:2017:L46OSZ5HTIP7DA5JZL2AV3JWI3

not attested not anchored not stored refs pending

The Matching Problem in General Graphs is in Quasi-NC

Jakub Tarnawski, Ola Svensson

arxiv:1704.01929 v2 · 2017-04-06 · cs.CC · 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{L46OSZ5HTIP7DA5JZL2AV3JWI3}

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	2026-05-18T00:05:51.350389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f3ce967a79a1ff183a9caf40aed3646dcd4af69d29f8e25f16274af998e4ffd

Aliases

arxiv: 1704.01929 · arxiv_version: 1704.01929v2 · doi: 10.48550/arxiv.1704.01929 · pith_short_12: L46OSZ5HTIP7 · pith_short_16: L46OSZ5HTIP7DA5J · pith_short_8: L46OSZ5H

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/L46OSZ5HTIP7DA5JZL2AV3JWI3 \
  | 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: 5f3ce967a79a1ff183a9caf40aed3646dcd4af69d29f8e25f16274af998e4ffd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3244197520d3a27f3aa9a5180a5921558848430ae24263164c3af7a135729ef7",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2017-04-06T16:50:26Z",
    "title_canon_sha256": "2f6ebe1a1af2e626d675af626227e252cfc78f3db71cb2310aaba95cc5f5b463"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.01929",
    "kind": "arxiv",
    "version": 2
  }
}