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#' @export
#' @title A General Equilibrium Model with Equity Shares
#' @aliases gemEquityShare_3_3
#' @description A general equilibrium model with equity shares and dividend.
#' @param ... arguments to be passed to the function sdm2.
#' @examples
#' \donttest{
#' dst.firm <- node_new("output",
#' type = "FIN",
#' rate = c(1, dividend.rate = 0.25),
#' "cc1", "equity.share"
#' )
#' node_set(dst.firm, "cc1",
#' type = "CD",
#' alpha = 2, beta = c(0.5, 0.5),
#' "prod", "lab"
#' )
#'
#' dst.laborer <- node_new("util",
#' type = "Leontief", a = 1,
#' "prod"
#' )
#'
#' dst.shareholder <- Clone(dst.laborer)
#'
#' ge <- sdm2(
#' A = list(dst.firm, dst.laborer, dst.shareholder),
#' B = diag(c(1, 0, 0)),
#' S0Exg = {
#' S0Exg <- matrix(NA, 3, 3)
#' S0Exg[2, 2] <- S0Exg[3, 3] <- 100
#' S0Exg
#' },
#' names.commodity = c("prod", "lab", "equity.share"),
#' names.agent = c("firm", "laborer", "shareholder"),
#' numeraire = "prod"
#' )
#'
#' ge$p # The third component is the dividend per unit of share.
#' ge$DV
#' ge$SV
#'
#' ## Set the growth rate to 0.03.
#' ge <- sdm2(
#' A = list(dst.firm, dst.laborer, dst.shareholder),
#' B = diag(c(1, 0, 0)),
#' S0Exg = {
#' S0Exg <- matrix(NA, 3, 3)
#' S0Exg[2, 2] <- S0Exg[3, 3] <- 100
#' S0Exg
#' },
#' names.commodity = c("prod", "lab", "equity.share"),
#' names.agent = c("firm", "laborer", "shareholder"),
#' numeraire = "prod",
#' GRExg = 0.03
#' )
#'
#' ge$z
#' ge$p
#'
#' #### an equivalent intertemporal model.
#' gr <- 0.03
#' rho.beta <- 0.8
#' np <- 5 # the number of economic periods
#' y1 <- 100 # the initial product supply
#'
#' n <- 2 * np - 1 # the number of commodity kinds
#' m <- np # the number of agent kinds
#'
#' names.commodity <- c(paste0("prod", 1:np), paste0("lab", 1:(np - 1)))
#' names.agent <- c(paste0("firm", 1:(np - 1)), "consumer")
#'
#' # the exogenous supply matrix.
#' S0Exg <- S0Exg <- matrix(NA, n, m, dimnames = list(names.commodity, names.agent))
#' S0Exg[paste0("lab", 1:(np - 1)), "consumer"] <- 100 * (1 + gr)^(0:(np - 2))
#' S0Exg["prod1", "consumer"] <- y1
#'
#' # the output coefficient matrix.
#' B <- matrix(0, n, m, dimnames = list(names.commodity, names.agent))
#' for (k in 1:(np - 1)) {
#' B[paste0("prod", k + 1), paste0("firm", k)] <- 1
#' }
#'
#' dstl.firm <- list()
#' for (k in 1:(np - 1)) {
#' dstl.firm[[k]] <- node_new(
#' "prod",
#' type = "CD",
#' alpha = 2, beta = c(0.5, 0.5),
#' paste0("prod", k), paste0("lab", k)
#' )
#' }
#'
#' dst.consumer <- node_new(
#' "util",
#' type = "CES", es = 1,
#' alpha = 1, beta = prop.table(rho.beta^(1:np)),
#' paste0("prod", 1:np)
#' )
#'
#' ge <- sdm2(
#' A = c(dstl.firm, dst.consumer),
#' B = B,
#' S0Exg = S0Exg,
#' names.commodity = names.commodity,
#' names.agent = names.agent,
#' numeraire = "prod1",
#' policy = makePolicyHeadTailAdjustment(gr = gr, np = np)
#' )
#'
#' ge$z
#' growth_rate(ge$z[1:4])
#' ge$p[6:9] / ge$p[1:4]
#' addmargins(ge$D, 2)
#' addmargins(ge$S, 2)
#' }
gemEquityShare_3_3 <- function(...) sdm2(...)
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