Pith Number

pith:DAXP65DI

pith:2012:DAXP65DIAAUHYYXTQSDH6UZDM3

not attested not anchored not stored refs pending

Bisimilarity of Pushdown Systems is Nonelementary

Andrzej S. Murawski, Michael Benedikt, Stefan G\"oller, Stefan Kiefer

arxiv:1210.7686 v1 · 2012-10-29 · cs.FL · 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{DAXP65DIAAUHYYXTQSDH6UZDM3}

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	2026-05-18T03:41:58.147522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

182eff746800287c62f384867f532366c2b948d01393c72c5fd426bf097bc346

Aliases

arxiv: 1210.7686 · arxiv_version: 1210.7686v1 · doi: 10.48550/arxiv.1210.7686 · pith_short_12: DAXP65DIAAUH · pith_short_16: DAXP65DIAAUHYYXT · pith_short_8: DAXP65DI

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/DAXP65DIAAUHYYXTQSDH6UZDM3 \
  | 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: 182eff746800287c62f384867f532366c2b948d01393c72c5fd426bf097bc346

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff6d4328268418647b3f505eab5faed689d5c83b6a912bb86265dd0ec2ffa797",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2012-10-29T15:11:34Z",
    "title_canon_sha256": "2734eda56b5b84ba5af78bb13b1b86af436c476c5a844cd41f0a44bdd7f54f11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.7686",
    "kind": "arxiv",
    "version": 1
  }
}