Pith Number

pith:IEQGYR2G

pith:2016:IEQGYR2GOCLQBL6JMKDBEK4ZW3

not attested not anchored not stored refs pending

A Note on the Complexity of Computing the Number of Reachable Vertices in a Digraph

Michele Borassi

arxiv:1602.02129 v1 · 2016-02-05 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IEQGYR2GOCLQBL6JMKDBEK4ZW3}

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	2026-05-18T01:21:14.441683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41206c4746709700afc96286122b99b6c44316fa89c833e606922175598dbbdf

Aliases

arxiv: 1602.02129 · arxiv_version: 1602.02129v1 · doi: 10.48550/arxiv.1602.02129 · pith_short_12: IEQGYR2GOCLQ · pith_short_16: IEQGYR2GOCLQBL6J · pith_short_8: IEQGYR2G

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/IEQGYR2GOCLQBL6JMKDBEK4ZW3 \
  | 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: 41206c4746709700afc96286122b99b6c44316fa89c833e606922175598dbbdf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdcf312e93427fa8ecacdbc21fe1869f748d066e37ba5efd6ded597a944ecafa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2016-02-05T19:31:09Z",
    "title_canon_sha256": "3457ef343bc986ec4c9d14d77da7b9850a268f094e707ac66055f72d241056ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.02129",
    "kind": "arxiv",
    "version": 1
  }
}