Pith Number

pith:FRBVC2NN

pith:2007:FRBVC2NNLGLKTZASNEHT4KP4KG

not attested not anchored not stored refs pending

Quantile regression with varying coefficients

Mi-Ok Kim

arxiv:0708.0471 v1 · 2007-08-03 · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FRBVC2NNLGLKTZASNEHT4KP4KG}

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	2026-07-04T15:52:57.960519Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c435169ad5996a9e412690f3e29fc518c9298c32373147f8ff664ef5c640ec7

Aliases

arxiv: 0708.0471 · arxiv_version: 0708.0471v1 · doi: 10.48550/arxiv.0708.0471 · pith_short_12: FRBVC2NNLGLK · pith_short_16: FRBVC2NNLGLKTZAS · pith_short_8: FRBVC2NN

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/FRBVC2NNLGLKTZASNEHT4KP4KG \
  | 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: 2c435169ad5996a9e412690f3e29fc518c9298c32373147f8ff664ef5c640ec7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3d3cb6016cf25113fa1937b8e7d470fe5aaecf95450695f532beed7350b8c61",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "",
    "primary_cat": "math.ST",
    "submitted_at": "2007-08-03T08:32:52Z",
    "title_canon_sha256": "247df6533114bb0870cdd73652a1dd49f822abbf601ab7e5e12fbfe7a361954b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.0471",
    "kind": "arxiv",
    "version": 1
  }
}