Pith Number

pith:ARKVDV7V

pith:2020:ARKVDV7VMDSBS6VTYOIJSAHT5S

not attested not anchored not stored refs pending

The fibers of the ramified Prym map

I. Spelta, J.C. Naranjo, P. Frediani

arxiv:2007.02068 v2 · 2020-07-04 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ARKVDV7VMDSBS6VTYOIJSAHT5S}

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	2026-07-05T02:38:14.512310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

045551d7f560e4197ab3c3909900f3ecb1261ac73e626a7c3c0c866688ce30c0

Aliases

arxiv: 2007.02068 · arxiv_version: 2007.02068v2 · doi: 10.48550/arxiv.2007.02068 · pith_short_12: ARKVDV7VMDSB · pith_short_16: ARKVDV7VMDSBS6VT · pith_short_8: ARKVDV7V

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/ARKVDV7VMDSBS6VTYOIJSAHT5S \
  | 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: 045551d7f560e4197ab3c3909900f3ecb1261ac73e626a7c3c0c866688ce30c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e0634024e75d65ea218266b8e738d4c668a63345a31e5aa183d8738c51dd4d8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2020-07-04T10:42:36Z",
    "title_canon_sha256": "3b25f503a28bbc94a570aa52aa7325620ae2e39dee7ccb8d7691b4e5e5a8e166"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.02068",
    "kind": "arxiv",
    "version": 2
  }
}