Pith Number

pith:YSPBYLZP

pith:2007:YSPBYLZP3RLYLGPB6QELGZDFVQ

not attested not anchored not stored refs pending

Improved Poincare inequalities with weights

Irene Drelichman, Ricardo G. Dur\'an

arxiv:0711.3399 v1 · 2007-11-21 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YSPBYLZP3RLYLGPB6QELGZDFVQ}

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	2026-05-18T02:16:09.194810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c49e1c2f2fdc578599e1f408b36465ac3aec32e2bcb68be79fdfe493db359987

Aliases

arxiv: 0711.3399 · arxiv_version: 0711.3399v1 · doi: 10.48550/arxiv.0711.3399 · pith_short_12: YSPBYLZP3RLY · pith_short_16: YSPBYLZP3RLYLGPB · pith_short_8: YSPBYLZP

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/YSPBYLZP3RLYLGPB6QELGZDFVQ \
  | 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: c49e1c2f2fdc578599e1f408b36465ac3aec32e2bcb68be79fdfe493db359987

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d18bec8ed6a0ab9ff2a70b60f1f7e87ee9a499a825aad8e98fa365d0dbb4eef",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.CA",
    "submitted_at": "2007-11-21T15:48:24Z",
    "title_canon_sha256": "f3327cee0d83f918551a1fff642148e6b8f7bd722d35aa89cd54246f0b1bd7e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0711.3399",
    "kind": "arxiv",
    "version": 1
  }
}