Pith Number

pith:T2U4FA5L

pith:2019:T2U4FA5LFSOSZO7ZRVU4SFQXCR

not attested not anchored not stored refs pending

A color-difference formula for evaluating color pairs with no separation -- $\Delta E_{NS}$

Fereshteh Mirjalili, Guihua Cui, Jan Morovic, Ming Ronnier Luo

arxiv:1904.11293 v1 · 2019-04-25 · eess.IV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T2U4FA5LFSOSZO7ZRVU4SFQXCR}

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	2026-05-17T23:47:45.272252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ea9c283ab2c9d2cbbf98d69c91617144af3d7b9611c6566b281f28ae4961eb7

Aliases

arxiv: 1904.11293 · arxiv_version: 1904.11293v1 · doi: 10.48550/arxiv.1904.11293 · pith_short_12: T2U4FA5LFSOS · pith_short_16: T2U4FA5LFSOSZO7Z · pith_short_8: T2U4FA5L

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/T2U4FA5LFSOSZO7ZRVU4SFQXCR \
  | 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: 9ea9c283ab2c9d2cbbf98d69c91617144af3d7b9611c6566b281f28ae4961eb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99de79777e94cc4fbc1d9a470295743701d75aa8e2046dd9444c2381f1081c6f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2019-04-25T12:29:43Z",
    "title_canon_sha256": "98a3edd7199b2d1e95b53571ae76915acdea5948a69fe3bf15a1cfceeae50afd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.11293",
    "kind": "arxiv",
    "version": 1
  }
}