Pith Number

pith:QAQW4FYF

pith:2015:QAQW4FYF4RHDJMZWCRRIHGLU4N

not attested not anchored not stored refs pending

An algebraic method to check the singularity-free paths for parallel robots

Damien Chablat (IRCCyN), Fabrice Rouillier (LIP6), Guillaume Moroz (INRIA Nancy - Grand Est / LORIA), Ranjan Jha (IRCCyN)

arxiv:1505.06842 v1 · 2015-05-26 · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QAQW4FYF4RHDJMZWCRRIHGLU4N}

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	2026-05-18T02:03:27.787180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80216e1705e44e34b3361462839974e37ecd03934052517b71fa10a54fb81e3a

Aliases

arxiv: 1505.06842 · arxiv_version: 1505.06842v1 · doi: 10.48550/arxiv.1505.06842 · pith_short_12: QAQW4FYF4RHD · pith_short_16: QAQW4FYF4RHDJMZW · pith_short_8: QAQW4FYF

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/QAQW4FYF4RHDJMZWCRRIHGLU4N \
  | 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: 80216e1705e44e34b3361462839974e37ecd03934052517b71fa10a54fb81e3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "189a0ddfd9716f85654b415bac4c6b74eaaa1b192c66bb542bcd38180e8cbc59",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2015-05-26T08:14:58Z",
    "title_canon_sha256": "1e22db404c5b7b7228f24dffbfb32bb8a17979c45652283fb3cc6813c2e1e800"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.06842",
    "kind": "arxiv",
    "version": 1
  }
}