Pith Number

pith:7TWTCIK6

pith:2015:7TWTCIK6UJ23CRQPNVSFCNHW2E

not attested not anchored not stored refs pending

A Simple Algorithm for Approximation by Nomographic Functions

Jafar Mohammadi, Slawomir Stanczak, Steffen Limmer

arxiv:1504.05474 v2 · 2015-04-21 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7TWTCIK6UJ23CRQPNVSFCNHW2E}

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	2026-05-18T01:37:01.536356Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fced31215ea275b1460f6d645134f6d10f328a9e4eed915a11456ea537eaf032

Aliases

arxiv: 1504.05474 · arxiv_version: 1504.05474v2 · doi: 10.48550/arxiv.1504.05474 · pith_short_12: 7TWTCIK6UJ23 · pith_short_16: 7TWTCIK6UJ23CRQP · pith_short_8: 7TWTCIK6

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/7TWTCIK6UJ23CRQPNVSFCNHW2E \
  | 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: fced31215ea275b1460f6d645134f6d10f328a9e4eed915a11456ea537eaf032

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ccd0928c948d4cf85aa352bfe31ef9a158c77822633d7531667751124907ed7",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-04-21T15:42:20Z",
    "title_canon_sha256": "e53402eb2ecfe74b66e42885bef271eeeecbc849d72cff205fe643650a3deed2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.05474",
    "kind": "arxiv",
    "version": 2
  }
}