Pith Number

pith:XUOPWT3L

pith:2015:XUOPWT3LJ6TOIIYOZT4ZQZHHCQ

not attested not anchored not stored refs pending

Counterexample Explanation by Learning Small Strategies in Markov Decision Processes

Andreas Fellner, Jan K\v{r}et\'insk\'y, Krishnendu Chatterjee, Martin Chmel\'ik, Tom\'a\v{s} Br\'azdil

arxiv:1502.02834 v1 · 2015-02-10 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XUOPWT3LJ6TOIIYOZT4ZQZHHCQ}

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	2026-05-18T02:27:30.766283Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd1cfb4f6b4fa6e4230eccf99864e714170ad2b761d43ec12dfc1e8ef1619694

Aliases

arxiv: 1502.02834 · arxiv_version: 1502.02834v1 · doi: 10.48550/arxiv.1502.02834 · pith_short_12: XUOPWT3LJ6TO · pith_short_16: XUOPWT3LJ6TOIIYO · pith_short_8: XUOPWT3L

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/XUOPWT3LJ6TOIIYOZT4ZQZHHCQ \
  | 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: bd1cfb4f6b4fa6e4230eccf99864e714170ad2b761d43ec12dfc1e8ef1619694

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8735f990a53aadf28be17adfee5ab529791219e0ad5171bb3a0cbf7e879f932",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-02-10T10:06:17Z",
    "title_canon_sha256": "b08b1f859f4626850001b3d726a5971bfbadf571e00d4d4105de3bb9e949a87e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02834",
    "kind": "arxiv",
    "version": 1
  }
}