Pith Number

pith:U6QSMUUO

pith:2017:U6QSMUUOXANLPFM2TDGXILBVLP

not attested not anchored not stored refs pending

A Decidable Fragment of Second Order Logic With Applications to Synthesis

Mahesh Viswanathan, P. Madhusudan, Shambwaditya Saha, Umang Mathur

arxiv:1712.05513 v3 · 2017-12-15 · cs.LO · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6QSMUUOXANLPFM2TDGXILBVLP}

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	2026-05-18T00:04:39.766968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7a126528eb81ab7959a98cd742c355bc92ee3d1219a200f6a55a842db3a3d6c

Aliases

arxiv: 1712.05513 · arxiv_version: 1712.05513v3 · doi: 10.48550/arxiv.1712.05513 · pith_short_12: U6QSMUUOXANL · pith_short_16: U6QSMUUOXANLPFM2 · pith_short_8: U6QSMUUO

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/U6QSMUUOXANLPFM2TDGXILBVLP \
  | 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: a7a126528eb81ab7959a98cd742c355bc92ee3d1219a200f6a55a842db3a3d6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60dff6f2e80a016368074464f5ec24a77a77af58b1543b51f46097007a70e236",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2017-12-15T03:03:11Z",
    "title_canon_sha256": "7ed303ae2e91738f1a08a1bd567099e12f14c4b4299c07ad0f7226d673eb97c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.05513",
    "kind": "arxiv",
    "version": 3
  }
}