Pith Number

pith:AH7TSUV2

pith:2020:AH7TSUV2P3B2HM7QOB5ASFIG3W

not attested not anchored not stored refs pending

The Complexity Landscape of Distributed Locally Checkable Problems on Trees

Yi-Jun Chang

arxiv:2009.09645 v2 · 2020-09-21 · cs.DS · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AH7TSUV2P3B2HM7QOB5ASFIG3W}

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	2026-06-23T02:12:29.397394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01ff3952ba7ec3a3b3f0707a091506dd85697f29e45b1bb2b12f2f6a44f9381a

Aliases

arxiv: 2009.09645 · arxiv_version: 2009.09645v2 · doi: 10.48550/arxiv.2009.09645 · pith_short_12: AH7TSUV2P3B2 · pith_short_16: AH7TSUV2P3B2HM7Q · pith_short_8: AH7TSUV2

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/AH7TSUV2P3B2HM7QOB5ASFIG3W \
  | 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: 01ff3952ba7ec3a3b3f0707a091506dd85697f29e45b1bb2b12f2f6a44f9381a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04c17fe1c4d6961a6beec80f7d368aa5bcbfcc231f1c95fedbcab3185eb05358",
    "cross_cats_sorted": [
      "cs.DC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2020-09-21T07:07:55Z",
    "title_canon_sha256": "c981ae19709049eeb579fe5581d6c07250012642cac9dd9b2c8792c910ad41cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.09645",
    "kind": "arxiv",
    "version": 2
  }
}