Pith Number

pith:TSAT6FEA

pith:2015:TSAT6FEASWQ6GFVUCAMEHLZRKJ

not attested not anchored not stored refs pending

Simple and Faster algorithm for Reachability in a Decremental Directed Graph

Manoj Gupta

arxiv:1504.08360 v3 · 2015-04-30 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TSAT6FEASWQ6GFVUCAMEHLZRKJ}

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	2026-05-18T02:07:26.225850Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c813f148095a1e316b4101843af315247e9eb173a791b3a676871350664a1d5

Aliases

arxiv: 1504.08360 · arxiv_version: 1504.08360v3 · doi: 10.48550/arxiv.1504.08360 · pith_short_12: TSAT6FEASWQ6 · pith_short_16: TSAT6FEASWQ6GFVU · pith_short_8: TSAT6FEA

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/TSAT6FEASWQ6GFVUCAMEHLZRKJ \
  | 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: 9c813f148095a1e316b4101843af315247e9eb173a791b3a676871350664a1d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "913ca337078ab9270f67798d5894d1a11be6f51d4eb4183573f53fe299719591",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-04-30T19:42:19Z",
    "title_canon_sha256": "6625a2170bf13e748aa33391604c5b948278bf68c2224fa81d866f791078ffac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.08360",
    "kind": "arxiv",
    "version": 3
  }
}