Pith Number

pith:UMDBR6VU

pith:2011:UMDBR6VURMOBO7BJSM2J3CPUV2

not attested not anchored not stored refs pending

Fractional derivatives in Dengue epidemics

Delfim F. M. Torres, Helena Sofia Rodrigues, Shakoor Pooseh

arxiv:1108.1683 v1 · 2011-08-08 · math.CA · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UMDBR6VURMOBO7BJSM2J3CPUV2}

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	2026-05-18T04:12:56.213998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a30618fab48b1c177c2993349d89f4aeaf361064e37967f49cc4436dcebaa8de

Aliases

arxiv: 1108.1683 · arxiv_version: 1108.1683v1 · doi: 10.48550/arxiv.1108.1683 · pith_short_12: UMDBR6VURMOB · pith_short_16: UMDBR6VURMOBO7BJ · pith_short_8: UMDBR6VU

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/UMDBR6VURMOBO7BJSM2J3CPUV2 \
  | 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: a30618fab48b1c177c2993349d89f4aeaf361064e37967f49cc4436dcebaa8de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fc9f3fc365278624e24e4c7995f4351ccbcb89cdb092b5641bda69bce4837bf",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2011-08-08T11:43:57Z",
    "title_canon_sha256": "2304cc640d3a2714060dfbc22aea00a0d2c439a2795c641967f01076cd9f95f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.1683",
    "kind": "arxiv",
    "version": 1
  }
}