Pith Number

pith:A3KMUWPW

pith:2017:A3KMUWPW3PSF766SLWEB3Q2VBV

not attested not anchored not stored refs pending

On Optimal Trees for Irregular Gather and Scatter Collectives

Jesper Larsson Tr\"aff

arxiv:1711.08731 v4 · 2017-11-23 · cs.CC · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A3KMUWPW3PSF766SLWEB3Q2VBV}

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	2026-05-17T23:59:53.472909Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06d4ca59f6dbe45ffbd25d881dc3550d5949ef70d33f1a796f8f1b7b1db35912

Aliases

arxiv: 1711.08731 · arxiv_version: 1711.08731v4 · doi: 10.48550/arxiv.1711.08731 · pith_short_12: A3KMUWPW3PSF · pith_short_16: A3KMUWPW3PSF766S · pith_short_8: A3KMUWPW

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/A3KMUWPW3PSF766SLWEB3Q2VBV \
  | 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: 06d4ca59f6dbe45ffbd25d881dc3550d5949ef70d33f1a796f8f1b7b1db35912

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90a1b259762d23990ceda3d07abd949e417c7d0e25779d7a17f62e729aff99b2",
    "cross_cats_sorted": [
      "cs.DC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2017-11-23T15:07:08Z",
    "title_canon_sha256": "476ee5b9839fba3c2f5bfdebc63b2ba8ce611deb6035877fc1eb602c6a89bfc0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.08731",
    "kind": "arxiv",
    "version": 4
  }
}