Pith Number

pith:X34VKS2T

pith:2013:X34VKS2TMB6D6YNJLWVSCV3773

not attested not anchored not stored refs pending

A nearly optimal algorithm for deciding connectivity queries in smooth and bounded real algebraic sets

Eric Schost, Mohab Safey El Din (LIP6, PolSys)

arxiv:1307.7836 v3 · 2013-07-30 · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X34VKS2TMB6D6YNJLWVSCV3773}

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	2026-05-18T01:01:09.088418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bef9554b53607c3f61a95dab21577ffedd8c7a106aa785e0157037cd561306ed

Aliases

arxiv: 1307.7836 · arxiv_version: 1307.7836v3 · doi: 10.48550/arxiv.1307.7836 · pith_short_12: X34VKS2TMB6D · pith_short_16: X34VKS2TMB6D6YNJ · pith_short_8: X34VKS2T

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/X34VKS2TMB6D6YNJLWVSCV3773 \
  | 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: bef9554b53607c3f61a95dab21577ffedd8c7a106aa785e0157037cd561306ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d801c19130830b3a568fdfe2392b67c55a1e30876accf90138996fc7fbfe23c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2013-07-30T06:30:48Z",
    "title_canon_sha256": "3b7021fb080eea2fe87eb29038bd19f0a02eff910b5652b1cac90582ff49b040"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7836",
    "kind": "arxiv",
    "version": 3
  }
}