Pith Number

pith:TAVAB6TR

pith:2015:TAVAB6TRPKWMNDUQXVNPOZ23QQ

not attested not anchored not stored refs pending

Calculus in the ring of Fermat reals Part I: Integral calculus

Enxin Wu, Paolo Giordano

arxiv:1503.05965 v2 · 2015-03-19 · 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{TAVAB6TRPKWMNDUQXVNPOZ23QQ}

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	2026-05-18T01:36:10.886830Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

982a00fa717aacc68e90bd5af7675b843d499c90b5024ef5a0647513e00b4b48

Aliases

arxiv: 1503.05965 · arxiv_version: 1503.05965v2 · doi: 10.48550/arxiv.1503.05965 · pith_short_12: TAVAB6TRPKWM · pith_short_16: TAVAB6TRPKWMNDUQ · pith_short_8: TAVAB6TR

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/TAVAB6TRPKWMNDUQXVNPOZ23QQ \
  | 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: 982a00fa717aacc68e90bd5af7675b843d499c90b5024ef5a0647513e00b4b48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4583b454728b7e895a67eca5e656c394b32822b2b443a2556727e98e78e43241",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2015-03-19T23:25:41Z",
    "title_canon_sha256": "c2edd0d965992d4bf8606952675eeb1709fc13330aa3be2c6ab96cd924565f08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.05965",
    "kind": "arxiv",
    "version": 2
  }
}