Pith Number

pith:Q4V2YB6V

pith:2014:Q4V2YB6VWU43IAFU2HPLLASAT3

not attested not anchored not stored refs pending

Alternating Towers and Piecewise Testable Separators

Micha\"el Thomazo, Tom\'a\v{s} Masopust, \v{S}t\v{e}p\'an Holub

arxiv:1409.3943 v2 · 2014-09-13 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q4V2YB6VWU43IAFU2HPLLASAT3}

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	2026-05-18T01:27:08.136269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

872bac07d5b539b400b4d1deb582409ee142fb0b55cdc566235d04708059241b

Aliases

arxiv: 1409.3943 · arxiv_version: 1409.3943v2 · doi: 10.48550/arxiv.1409.3943 · pith_short_12: Q4V2YB6VWU43 · pith_short_16: Q4V2YB6VWU43IAFU · pith_short_8: Q4V2YB6V

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/Q4V2YB6VWU43IAFU2HPLLASAT3 \
  | 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: 872bac07d5b539b400b4d1deb582409ee142fb0b55cdc566235d04708059241b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "595dd555a0deb292bcabb94ea4ea96aa3e36798a842fececfdc25ba2303d348b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2014-09-13T12:51:44Z",
    "title_canon_sha256": "e7a4003bf46ec83814ef1520f16dad898acef0527287f0dd3ad94bb681ff522b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.3943",
    "kind": "arxiv",
    "version": 2
  }
}