Pith Number

pith:7MDXEDQY

pith:2018:7MDXEDQYQGDEHTIBCS5LV5VPTX

not attested not anchored not stored refs pending

A geometric description of Discrete Exterior Calculus for general triangulations

Humberto Esqueda, Miguel Angel Moreles, Rafael Herrera, Salvador Botello

arxiv:1802.01158 v2 · 2018-02-04 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7MDXEDQYQGDEHTIBCS5LV5VPTX}

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	2026-05-18T00:14:06.357294Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb07720e18818643cd0114babaf6af9debe31db91c436f7bcc4010ae2dc2fe06

Aliases

arxiv: 1802.01158 · arxiv_version: 1802.01158v2 · doi: 10.48550/arxiv.1802.01158 · pith_short_12: 7MDXEDQYQGDE · pith_short_16: 7MDXEDQYQGDEHTIB · pith_short_8: 7MDXEDQY

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/7MDXEDQYQGDEHTIBCS5LV5VPTX \
  | 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: fb07720e18818643cd0114babaf6af9debe31db91c436f7bcc4010ae2dc2fe06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f455143d7e62f2d68a476b3b31f32350bec9e1c605cbcd3ef78fb0dc6124634b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-02-04T17:01:48Z",
    "title_canon_sha256": "2d6d980a11380b6327b4431c8281f41da6bb6e3d339fdec59b0a9a73c5c1b566"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01158",
    "kind": "arxiv",
    "version": 2
  }
}